diff --git a/platform/features/timeline/bundle.js b/platform/features/timeline/bundle.js
index 5be95f643c..f298cb887e 100644
--- a/platform/features/timeline/bundle.js
+++ b/platform/features/timeline/bundle.js
@@ -22,6 +22,7 @@
 /*global define*/
 
 define([
+    "./src/actions/ExportTimelineAsCSVAction",
     "./src/controllers/TimelineController",
     "./src/controllers/TimelineGraphController",
     "./src/controllers/TimelineDateTimeController",
@@ -50,6 +51,7 @@ define([
     "text!./res/templates/controls/datetime.html",
     'legacyRegistry'
 ], function (
+    ExportTimelineAsCSVAction,
     TimelineController,
     TimelineGraphController,
     TimelineDateTimeController,
@@ -85,6 +87,15 @@ define([
         "description": "Resources, templates, CSS, and code for Timelines.",
         "resources": "res",
         "extensions": {
+            "actions": [
+                {
+                    "key": "timeline.export",
+                    "name": "Export Timeline as CSV",
+                    "category": "contextual",
+                    "implementation": ExportTimelineAsCSVAction,
+                    "depends": [ "exportService", "notificationService" ]
+                }
+            ],
             "constants": [
                 {
                     "key": "TIMELINE_MINIMUM_DURATION",
diff --git a/platform/features/timeline/src/actions/CompositionColumn.js b/platform/features/timeline/src/actions/CompositionColumn.js
new file mode 100644
index 0000000000..b7208c3e92
--- /dev/null
+++ b/platform/features/timeline/src/actions/CompositionColumn.js
@@ -0,0 +1,50 @@
+/*****************************************************************************
+ * Open MCT Web, Copyright (c) 2009-2015, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT Web is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT Web includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+/*global define*/
+
+define([], function () {
+    "use strict";
+
+    /**
+     * A column containing references to other objects contained
+     * in a domain object's composition.
+     * @param {number} index the zero-based index of the composition
+     *        element associated with this column
+     * @constructor
+     * @implements {platform/features/timeline.TimelineCSVColumn}
+     */
+    function CompositionColumn(index) {
+        this.index = index;
+    }
+
+    CompositionColumn.prototype.name = function () {
+        return "Child " + (this.index + 1);
+    };
+
+    CompositionColumn.prototype.value = function (domainObject) {
+        var model = domainObject.getModel(),
+            composition = model.composition || [];
+        return (composition[this.index]) || "";
+    };
+
+    return CompositionColumn;
+});
diff --git a/platform/features/timeline/src/actions/ExportTimelineAsCSVAction.js b/platform/features/timeline/src/actions/ExportTimelineAsCSVAction.js
new file mode 100644
index 0000000000..387c0839a0
--- /dev/null
+++ b/platform/features/timeline/src/actions/ExportTimelineAsCSVAction.js
@@ -0,0 +1,70 @@
+/*****************************************************************************
+ * Open MCT Web, Copyright (c) 2009-2015, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT Web is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT Web includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+/*global define*/
+
+define(["./ExportTimelineAsCSVTask"], function (ExportTimelineAsCSVTask) {
+    'use strict';
+
+    /**
+     * Implements the "Export Timeline as CSV" action.
+     *
+     * @param exportService the service used to perform the CSV export
+     * @param notificationService the service used to show notifications
+     * @param context the Action's context
+     * @implements {Action}
+     * @constructor
+     * @memberof {platform/features/timeline}
+     */
+    function ExportTimelineAsCSVAction(exportService, notificationService, context) {
+        this.task = new ExportTimelineAsCSVTask(
+            exportService,
+            context.domainObject
+        );
+        this.notificationService = notificationService;
+    }
+
+    ExportTimelineAsCSVAction.prototype.perform = function () {
+        var notificationService = this.notificationService,
+            notification = notificationService.notify({
+                title: "Exporting CSV",
+                unknownProgress: true
+            });
+
+        return this.task.run()
+            .then(function () {
+                notification.dismiss();
+            })
+            .catch(function () {
+                notification.dismiss();
+                notificationService.error("Error exporting CSV");
+            });
+    };
+
+    ExportTimelineAsCSVAction.appliesTo = function (context) {
+        return context.domainObject &&
+            context.domainObject.hasCapability('type') &&
+                context.domainObject.getCapability('type')
+                    .instanceOf('timeline');
+    };
+
+    return ExportTimelineAsCSVAction;
+});
\ No newline at end of file
diff --git a/platform/features/timeline/src/actions/ExportTimelineAsCSVTask.js b/platform/features/timeline/src/actions/ExportTimelineAsCSVTask.js
new file mode 100644
index 0000000000..253db5c8b9
--- /dev/null
+++ b/platform/features/timeline/src/actions/ExportTimelineAsCSVTask.js
@@ -0,0 +1,70 @@
+/*****************************************************************************
+ * Open MCT Web, Copyright (c) 2009-2015, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT Web is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT Web includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+/*global define,Promise*/
+
+/**
+ * Module defining ExportTimelineAsCSVTask. Created by vwoeltje on 2/8/16.
+ */
+define([
+    "./TimelineTraverser",
+    "./TimelineColumnizer"
+], function (TimelineTraverser, TimelineColumnizer) {
+    "use strict";
+
+    /**
+     * Runs (and coordinates) the preparation and export of CSV data
+     * for the "Export Timeline as CSV" action.
+     *
+     * @constructor
+     * @memberof {platform/features/timeline}
+     * @param exportService the service used to export as CSV
+     * @param {DomainObject} domainObject the timeline being exported
+     */
+    function ExportTimelineAsCSVTask(exportService, domainObject) {
+        this.domainObject = domainObject;
+        this.exportService = exportService;
+    }
+
+    /**
+     * Run this CSV export task.
+     *
+     * @returns {Promise} a promise that will be resolved when the
+     *          export has finished (or rejected if there are problems.)
+     */
+    ExportTimelineAsCSVTask.prototype.run = function () {
+        var exportService = this.exportService;
+
+        function doExport(objects) {
+            var exporter = new TimelineColumnizer(objects),
+                options = { headers: exporter.headers() };
+            return exporter.rows().then(function (rows) {
+                return exportService.exportCSV(rows, options);
+            });
+        }
+
+        return new TimelineTraverser(this.domainObject)
+            .buildObjectList()
+            .then(doExport);
+    };
+
+    return ExportTimelineAsCSVTask;
+});
diff --git a/platform/features/timeline/src/actions/IdColumn.js b/platform/features/timeline/src/actions/IdColumn.js
new file mode 100644
index 0000000000..56ddfe385f
--- /dev/null
+++ b/platform/features/timeline/src/actions/IdColumn.js
@@ -0,0 +1,44 @@
+/*****************************************************************************
+ * Open MCT Web, Copyright (c) 2009-2015, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT Web is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT Web includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+/*global define*/
+
+define([], function () {
+    "use strict";
+
+    /**
+     * A column showing domain object identifiers.
+     * @constructor
+     * @implements {platform/features/timeline.TimelineCSVColumn}
+     */
+    function IdColumn() {
+    }
+
+    IdColumn.prototype.name = function () {
+        return "Identifier";
+    };
+
+    IdColumn.prototype.value = function (domainObject) {
+        return domainObject.getId();
+    };
+
+    return IdColumn;
+});
diff --git a/platform/features/timeline/src/actions/MetadataColumn.js b/platform/features/timeline/src/actions/MetadataColumn.js
new file mode 100644
index 0000000000..c94237a917
--- /dev/null
+++ b/platform/features/timeline/src/actions/MetadataColumn.js
@@ -0,0 +1,50 @@
+/*****************************************************************************
+ * Open MCT Web, Copyright (c) 2009-2015, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT Web is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT Web includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+/*global define*/
+
+define([], function () {
+    "use strict";
+
+    /**
+     * A column reflecting properties from domain object metadata.
+     * @constructor
+     * @implements {platform/features/timeline.TimelineCSVColumn}
+     */
+    function MetadataColumn(propertyName) {
+        this.propertyName = propertyName;
+    }
+
+    MetadataColumn.prototype.name = function () {
+        return this.propertyName;
+    };
+
+    MetadataColumn.prototype.value = function (domainObject) {
+        var properties = domainObject.useCapability('metadata'),
+            name = this.propertyName;
+        return properties.reduce(function (value, property) {
+            return property.name === name ?
+                property.value : value;
+        }, "");
+    };
+
+    return MetadataColumn;
+});
diff --git a/platform/features/timeline/src/actions/ModeColumn.js b/platform/features/timeline/src/actions/ModeColumn.js
new file mode 100644
index 0000000000..4ae61b30d3
--- /dev/null
+++ b/platform/features/timeline/src/actions/ModeColumn.js
@@ -0,0 +1,49 @@
+/*****************************************************************************
+ * Open MCT Web, Copyright (c) 2009-2015, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT Web is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT Web includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+/*global define*/
+
+define([], function () {
+    "use strict";
+
+    /**
+     * A column showing relationships to activity modes.
+     * @constructor
+     * @param {number} index the zero-based index of the composition
+     *        element associated with this column
+     * @implements {platform/features/timeline.TimelineCSVColumn}
+     */
+    function ModeColumn(index) {
+        this.index = index;
+    }
+
+    ModeColumn.prototype.name = function () {
+        return "Activity Mode " + (this.index + 1);
+    };
+
+    ModeColumn.prototype.value = function (domainObject) {
+        var model = domainObject.getModel(),
+            composition = (model.relationships || {}).modes || [];
+        return (composition[this.index]) || "";
+    };
+
+    return ModeColumn;
+});
diff --git a/platform/features/timeline/src/actions/TimelineColumnizer.js b/platform/features/timeline/src/actions/TimelineColumnizer.js
new file mode 100644
index 0000000000..3069bd8b96
--- /dev/null
+++ b/platform/features/timeline/src/actions/TimelineColumnizer.js
@@ -0,0 +1,161 @@
+/*****************************************************************************
+ * Open MCT Web, Copyright (c) 2009-2015, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT Web is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT Web includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+/*global define,Promise*/
+
+define([
+    "./IdColumn",
+    "./ModeColumn",
+    "./CompositionColumn",
+    "./MetadataColumn",
+    "./TimespanColumn"
+], function (
+    IdColumn,
+    ModeColumn,
+    CompositionColumn,
+    MetadataColumn,
+    TimespanColumn
+) {
+    'use strict';
+
+    /**
+     * A description of how to populate a given column within a
+     * prepared table of domain object data, for CSV export.
+     * @interface platform/features/timeline.TimelineCSVColumn
+     */
+
+    /**
+     * Get the value that belongs in this column for a given
+     * domain object.
+     * @memberof {platform/features/timeline.TimelineCSVColumn#}
+     * @method value
+     * @param {DomainObject} domainObject the domain object
+     *        represented by this row
+     * @returns {string|Promise<string>} the value for this cell
+     */
+
+    /**
+     * Get the name of this column, as belongs in a header.
+     * @memberof {platform/features/timeline.TimelineCSVColumn#}
+     * @method name
+     * @returns {string} the name of this column
+     */
+
+    /**
+     * Handles conversion of a list of domain objects to a table
+     * representation appropriate for CSV export.
+     *
+     * @param {DomainObject[]} domainObjects the objects to include
+     *        in the exported data
+     * @constructor
+     * @memberof {platform/features/timeline}
+     */
+    function TimelineColumnizer(domainObjects) {
+        var maxComposition = 0,
+            maxRelationships = 0,
+            columnNames = {},
+            columns = [],
+            foundTimespan = false,
+            i;
+
+        function addMetadataProperty(property) {
+            var name = property.name;
+            if (!columnNames[name]) {
+                columnNames[name] = true;
+                columns.push(new MetadataColumn(name));
+            }
+        }
+
+        columns.push(new IdColumn());
+
+        domainObjects.forEach(function (domainObject) {
+            var model = domainObject.getModel(),
+                composition = model.composition,
+                relationships = model.relationships,
+                modes = relationships && relationships.modes,
+                metadataProperties = domainObject.useCapability('metadata');
+
+            if (composition) {
+                maxComposition = Math.max(maxComposition, composition.length);
+            }
+
+            if (modes) {
+                maxRelationships = Math.max(maxRelationships, modes.length);
+            }
+
+            if (domainObject.hasCapability('timespan')) {
+                foundTimespan = true;
+            }
+
+            if (metadataProperties) {
+                metadataProperties.forEach(addMetadataProperty);
+            }
+        });
+
+        if (foundTimespan) {
+            columns.push(new TimespanColumn(true));
+            columns.push(new TimespanColumn(false));
+        }
+
+        for (i = 0; i < maxComposition; i += 1) {
+            columns.push(new CompositionColumn(i));
+        }
+
+        for (i = 0; i < maxRelationships; i += 1) {
+            columns.push(new ModeColumn(i));
+        }
+
+        this.domainObjects = domainObjects;
+        this.columns = columns;
+    }
+
+    /**
+     * Get a tabular representation of domain object data.
+     * Each row corresponds to a single object; each element
+     * in each row corresponds to a property designated by
+     * the `headers`, correlated by index.
+     * @returns {Promise.<string[][]>} domain object data
+     */
+    TimelineColumnizer.prototype.rows = function () {
+        var columns = this.columns;
+
+        function toRow(domainObject) {
+            return Promise.all(columns.map(function (column) {
+                return column.value(domainObject);
+            }));
+        }
+
+        return Promise.all(this.domainObjects.map(toRow));
+    };
+
+    /**
+     * Get the column headers associated with this tabular
+     * representation of objects.
+     * @returns {string[]} column headers
+     */
+    TimelineColumnizer.prototype.headers = function () {
+        return this.columns.map(function (column) {
+            return column.name();
+        });
+    };
+
+    return TimelineColumnizer;
+});
diff --git a/platform/features/timeline/src/actions/TimelineTraverser.js b/platform/features/timeline/src/actions/TimelineTraverser.js
new file mode 100644
index 0000000000..f6857658fb
--- /dev/null
+++ b/platform/features/timeline/src/actions/TimelineTraverser.js
@@ -0,0 +1,85 @@
+/*****************************************************************************
+ * Open MCT Web, Copyright (c) 2009-2015, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT Web is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT Web includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+/*global define,Promise*/
+
+define([], function () {
+    "use strict";
+
+    /**
+     * Builds a list of domain objects which should be included
+     * in the CSV export of a given timeline.
+     * @param {DomainObject} domainObject the object being exported
+     * @constructor
+     */
+    function TimelineTraverser(domainObject) {
+        this.domainObject = domainObject;
+    }
+
+    /**
+     * Get a list of domain objects for CSV export.
+     * @returns {Promise.<DomainObject[]>} a list of domain objects
+     */
+    TimelineTraverser.prototype.buildObjectList = function () {
+        var idSet = {},
+            objects = [];
+
+        function addObject(domainObject) {
+            var id = domainObject.getId(),
+                subtasks = [];
+
+            function addCompositionObjects() {
+                return domainObject.useCapability('composition')
+                    .then(function (childObjects) {
+                        return Promise.all(childObjects.map(addObject));
+                    });
+            }
+
+            function addRelationships() {
+                var relationship = domainObject.getCapability('relationship');
+                relationship.getRelatedObjects('modes')
+                    .then(function (modeObjects) {
+                        return Promise.all(modeObjects.map(addObject));
+                    });
+            }
+
+            if (!idSet[id]) {
+                idSet[id] = true;
+                objects.push(domainObject);
+                if (domainObject.hasCapability('composition')) {
+                    subtasks.push(addCompositionObjects());
+                }
+                if (domainObject.hasCapability('relationship')) {
+                    subtasks.push(addRelationships());
+                }
+            }
+
+            return Promise.all(subtasks);
+        }
+
+        return addObject(this.domainObject).then(function () {
+            return objects;
+        });
+    };
+
+    return TimelineTraverser;
+
+});
\ No newline at end of file
diff --git a/platform/features/timeline/src/actions/TimespanColumn.js b/platform/features/timeline/src/actions/TimespanColumn.js
new file mode 100644
index 0000000000..6d0c4e05a9
--- /dev/null
+++ b/platform/features/timeline/src/actions/TimespanColumn.js
@@ -0,0 +1,55 @@
+/*****************************************************************************
+ * Open MCT Web, Copyright (c) 2009-2015, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT Web is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT Web includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+/*global define*/
+
+define(['../TimelineFormatter'], function (TimelineFormatter) {
+    "use strict";
+
+    var FORMATTER = new TimelineFormatter();
+
+    /**
+     * A column showing start or end times associated with a domain object.
+     * @constructor
+     * @param {boolean} isStart true if this column refers to the object's
+     *        start time; false if it refers to the object's end time
+     * @implements {platform/features/timeline.TimelineCSVColumn}
+     */
+    function TimespanColumn(isStart) {
+        this.isStart = isStart;
+    }
+
+    TimespanColumn.prototype.name = function () {
+        return this.isStart ? "Start" : "End";
+    };
+
+    TimespanColumn.prototype.value = function (domainObject) {
+        var isStart = this.isStart;
+        return domainObject.hasCapability('timespan') ?
+            domainObject.useCapability('timespan').then(function (timespan) {
+                return FORMATTER.format(
+                    isStart ? timespan.getStart() : timespan.getEnd()
+                );
+            }) : "";
+    };
+
+    return TimespanColumn;
+});
diff --git a/platform/features/timeline/test/actions/CompositionColumnSpec.js b/platform/features/timeline/test/actions/CompositionColumnSpec.js
new file mode 100644
index 0000000000..99e23d5597
--- /dev/null
+++ b/platform/features/timeline/test/actions/CompositionColumnSpec.js
@@ -0,0 +1,74 @@
+/*****************************************************************************
+ * Open MCT Web, Copyright (c) 2009-2015, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT Web is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT Web includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+/*global define,describe,it,expect,beforeEach,waitsFor,jasmine,window,afterEach*/
+
+define(
+    ['../../src/actions/CompositionColumn'],
+    function (CompositionColumn) {
+        describe("CompositionColumn", function () {
+            var testIndex,
+                column;
+
+            beforeEach(function () {
+                testIndex = 3;
+                column = new CompositionColumn(testIndex);
+            });
+
+            it("includes a one-based index in its name", function () {
+                expect(column.name().indexOf(String(testIndex + 1)))
+                    .not.toEqual(-1);
+            });
+
+            describe("value", function () {
+                var mockDomainObject,
+                    testModel;
+
+                beforeEach(function () {
+                    mockDomainObject = jasmine.createSpyObj(
+                        'domainObject',
+                        [ 'getId', 'getModel', 'getCapability' ]
+                    );
+                    testModel = {
+                        composition: [ 'a', 'b', 'c', 'd', 'e', 'f' ]
+                    };
+                    mockDomainObject.getModel.andReturn(testModel);
+                });
+
+                it("returns a corresponding identifier", function () {
+                    expect(column.value(mockDomainObject))
+                        .toEqual(testModel.composition[testIndex]);
+                });
+
+                it("returns nothing when composition is exceeded", function () {
+                    testModel.composition = [ 'foo' ];
+                    expect(column.value(mockDomainObject)).toEqual("");
+                });
+
+                it("returns nothing when composition is absent", function () {
+                    delete testModel.composition;
+                    expect(column.value(mockDomainObject)).toEqual("");
+                });
+            });
+
+        });
+    }
+);
\ No newline at end of file
diff --git a/platform/features/timeline/test/actions/ExportTimelineAsCSVActionSpec.js b/platform/features/timeline/test/actions/ExportTimelineAsCSVActionSpec.js
new file mode 100644
index 0000000000..3d5cd8b01c
--- /dev/null
+++ b/platform/features/timeline/test/actions/ExportTimelineAsCSVActionSpec.js
@@ -0,0 +1,153 @@
+/*****************************************************************************
+ * Open MCT Web, Copyright (c) 2009-2015, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT Web is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT Web includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+/*global define,describe,it,expect,beforeEach,waitsFor,jasmine,window,afterEach*/
+
+define(
+    ['../../src/actions/ExportTimelineAsCSVAction'],
+    function (ExportTimelineAsCSVAction) {
+        describe("ExportTimelineAsCSVAction", function () {
+            var mockExportService,
+                mockNotificationService,
+                mockNotification,
+                mockDomainObject,
+                mockType,
+                testContext,
+                testType,
+                action;
+
+            beforeEach(function () {
+                mockDomainObject = jasmine.createSpyObj(
+                    'domainObject',
+                    [ 'getId', 'getModel', 'getCapability', 'hasCapability' ]
+                );
+                mockType = jasmine.createSpyObj('type', [ 'instanceOf' ]);
+                mockExportService = jasmine.createSpyObj(
+                    'exportService',
+                    [ 'exportCSV' ]
+                );
+                mockNotificationService = jasmine.createSpyObj(
+                    'notificationService',
+                    [ 'notify', 'error' ]
+                );
+                mockNotification = jasmine.createSpyObj(
+                    'notification',
+                    [ 'dismiss' ]
+                );
+
+                mockNotificationService.notify.andReturn(mockNotification);
+
+                mockDomainObject.hasCapability.andReturn(true);
+                mockDomainObject.getCapability.andReturn(mockType);
+                mockType.instanceOf.andCallFake(function (type) {
+                    return type === testType;
+                });
+
+                testContext = { domainObject: mockDomainObject };
+
+                action = new ExportTimelineAsCSVAction(
+                    mockExportService,
+                    mockNotificationService,
+                    testContext
+                );
+            });
+
+            it("is applicable to timelines", function () {
+                testType = 'timeline';
+                expect(ExportTimelineAsCSVAction.appliesTo(testContext))
+                    .toBe(true);
+            });
+
+            it("is not applicable to non-timelines", function () {
+                testType = 'folder';
+                expect(ExportTimelineAsCSVAction.appliesTo(testContext))
+                    .toBe(false);
+            });
+
+            describe("when performed", function () {
+                var testPromise,
+                    mockCallback;
+
+                beforeEach(function () {
+                    mockCallback = jasmine.createSpy('callback');
+                    // White-boxy; we know most work is delegated
+                    // to the associated Task, so stub out that interaction.
+                    spyOn(action.task, "run").andCallFake(function () {
+                        return new Promise(function (resolve, reject) {
+                            testPromise = {
+                                resolve: resolve,
+                                reject: reject
+                            };
+                        });
+                    });
+                    action.perform().then(mockCallback);
+                });
+
+                it("shows a notification", function () {
+                    expect(mockNotificationService.notify)
+                        .toHaveBeenCalled();
+                });
+
+                it("starts an export task", function () {
+                    expect(action.task.run).toHaveBeenCalled();
+                });
+
+                describe("and completed", function () {
+                    beforeEach(function () {
+                        testPromise.resolve();
+                        waitsFor(function () {
+                            return mockCallback.calls.length > 0;
+                        });
+                    });
+
+                    it("dismisses the displayed notification", function () {
+                        expect(mockNotification.dismiss)
+                            .toHaveBeenCalled();
+                    });
+
+                    it("shows no error messages", function () {
+                        expect(mockNotificationService.error)
+                            .not.toHaveBeenCalled();
+                    });
+                });
+
+                describe("and an error occurs", function () {
+                    beforeEach(function () {
+                        testPromise.reject();
+                        waitsFor(function () {
+                            return mockCallback.calls.length > 0;
+                        });
+                    });
+
+                    it("dismisses the displayed notification", function () {
+                        expect(mockNotification.dismiss)
+                            .toHaveBeenCalled();
+                    });
+
+                    it("shows an error message", function () {
+                        expect(mockNotificationService.error)
+                            .toHaveBeenCalledWith(jasmine.any(String));
+                    });
+                });
+            });
+        });
+    }
+);
\ No newline at end of file
diff --git a/platform/features/timeline/test/actions/ExportTimelineAsCSVTaskSpec.js b/platform/features/timeline/test/actions/ExportTimelineAsCSVTaskSpec.js
new file mode 100644
index 0000000000..7979104ee5
--- /dev/null
+++ b/platform/features/timeline/test/actions/ExportTimelineAsCSVTaskSpec.js
@@ -0,0 +1,79 @@
+/*****************************************************************************
+ * Open MCT Web, Copyright (c) 2009-2015, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT Web is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT Web includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+/*global define,describe,it,expect,beforeEach,waitsFor,jasmine,window,afterEach*/
+
+define(
+    ['../../src/actions/ExportTimelineAsCSVTask'],
+    function (ExportTimelineAsCSVTask) {
+        'use strict';
+
+        // Note that most responsibility is delegated to helper
+        // classes, so testing here is minimal.
+        describe("EXportTimelineAsCSVTask", function () {
+            var mockExportService,
+                mockDomainObject,
+                task;
+
+            beforeEach(function () {
+                mockExportService = jasmine.createSpyObj(
+                    'exportService',
+                    [ 'exportCSV' ]
+                );
+                mockDomainObject = jasmine.createSpyObj(
+                    'domainObject',
+                    [
+                        'getCapability',
+                        'useCapability',
+                        'hasCapability',
+                        'getId',
+                        'getModel'
+                    ]
+                );
+
+                mockDomainObject.getId.andReturn('mock');
+                mockDomainObject.getModel.andReturn({});
+
+                task = new ExportTimelineAsCSVTask(
+                    mockExportService,
+                    mockDomainObject
+                );
+            });
+
+            describe("when run", function () {
+                var mockCallback;
+
+                beforeEach(function () {
+                    mockCallback = jasmine.createSpy('callback');
+                    task.run().then(mockCallback);
+                    waitsFor(function () {
+                        return mockCallback.calls.length > 0;
+                    });
+                });
+
+                it("exports to CSV", function () {
+                    expect(mockExportService.exportCSV)
+                        .toHaveBeenCalled();
+                });
+            });
+        });
+    }
+);
diff --git a/platform/features/timeline/test/actions/IdColumnSpec.js b/platform/features/timeline/test/actions/IdColumnSpec.js
new file mode 100644
index 0000000000..a12b6145a9
--- /dev/null
+++ b/platform/features/timeline/test/actions/IdColumnSpec.js
@@ -0,0 +1,59 @@
+/*****************************************************************************
+ * Open MCT Web, Copyright (c) 2009-2015, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT Web is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT Web includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+/*global define,describe,it,expect,beforeEach,waitsFor,jasmine,window,afterEach*/
+
+define(
+    ['../../src/actions/IdColumn'],
+    function (IdColumn) {
+        describe("IdColumn", function () {
+            var column;
+
+            beforeEach(function () {
+                column = new IdColumn();
+            });
+
+            it("has a name", function () {
+                expect(column.name()).toEqual(jasmine.any(String));
+            });
+
+            describe("value", function () {
+                var mockDomainObject,
+                    testId;
+
+                beforeEach(function () {
+                    testId = "foo";
+                    mockDomainObject = jasmine.createSpyObj(
+                        'domainObject',
+                        [ 'getId', 'getModel', 'getCapability' ]
+                    );
+                    mockDomainObject.getId.andReturn(testId);
+                });
+
+                it("provides a domain object's identifier", function () {
+                    expect(column.value(mockDomainObject))
+                        .toEqual(testId);
+                });
+            });
+
+        });
+    }
+);
\ No newline at end of file
diff --git a/platform/features/timeline/test/actions/MetadataColumnSpec.js b/platform/features/timeline/test/actions/MetadataColumnSpec.js
new file mode 100644
index 0000000000..ba38fc83c0
--- /dev/null
+++ b/platform/features/timeline/test/actions/MetadataColumnSpec.js
@@ -0,0 +1,76 @@
+/*****************************************************************************
+ * Open MCT Web, Copyright (c) 2009-2015, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT Web is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT Web includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+/*global define,describe,it,expect,beforeEach,waitsFor,jasmine,window,afterEach*/
+
+define(
+    ['../../src/actions/MetadataColumn'],
+    function (MetadataColumn) {
+        describe("MetadataColumn", function () {
+            var testName,
+                column;
+
+            beforeEach(function () {
+                testName = 'Foo';
+                column = new MetadataColumn(testName);
+            });
+
+            it("reports its property name", function () {
+                expect(column.name()).toEqual(testName);
+            });
+
+            describe("value", function () {
+                var mockDomainObject,
+                    testMetadata,
+                    testIndex;
+
+                beforeEach(function () {
+                    mockDomainObject = jasmine.createSpyObj(
+                        'domainObject',
+                        [ 'getId', 'getModel', 'getCapability', 'useCapability' ]
+                    );
+                    testMetadata = [
+                        { name: "Something else", value: 123 },
+                        { value: 456 },
+                        { name: "And something else", value: 789 }
+                    ];
+                    testIndex = 1;
+                    testMetadata[testIndex].name = testName;
+
+                    mockDomainObject.useCapability.andCallFake(function (c) {
+                        return (c === 'metadata') && testMetadata;
+                    });
+                });
+
+                it("returns a corresponding value", function () {
+                    expect(column.value(mockDomainObject))
+                        .toEqual(testMetadata[testIndex].value);
+                });
+
+                it("returns nothing when no such property is present", function () {
+                    testMetadata[testIndex].name = "Not " + testName;
+                    expect(column.value(mockDomainObject)).toEqual("");
+                });
+            });
+
+        });
+    }
+);
\ No newline at end of file
diff --git a/platform/features/timeline/test/actions/ModeColumnSpec.js b/platform/features/timeline/test/actions/ModeColumnSpec.js
new file mode 100644
index 0000000000..ab15d696c2
--- /dev/null
+++ b/platform/features/timeline/test/actions/ModeColumnSpec.js
@@ -0,0 +1,76 @@
+/*****************************************************************************
+ * Open MCT Web, Copyright (c) 2009-2015, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT Web is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT Web includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+/*global define,describe,it,expect,beforeEach,waitsFor,jasmine,window,afterEach*/
+
+define(
+    ['../../src/actions/ModeColumn'],
+    function (ModeColumn) {
+        describe("ModeColumn", function () {
+            var testIndex,
+                column;
+
+            beforeEach(function () {
+                testIndex = 3;
+                column = new ModeColumn(testIndex);
+            });
+
+            it("includes a one-based index in its name", function () {
+                expect(column.name().indexOf(String(testIndex + 1)))
+                    .not.toEqual(-1);
+            });
+
+            describe("value", function () {
+                var mockDomainObject,
+                    testModel;
+
+                beforeEach(function () {
+                    mockDomainObject = jasmine.createSpyObj(
+                        'domainObject',
+                        [ 'getId', 'getModel', 'getCapability' ]
+                    );
+                    testModel = {
+                        relationships: {
+                            modes: [ 'a', 'b', 'c', 'd', 'e', 'f' ]
+                        }
+                    };
+                    mockDomainObject.getModel.andReturn(testModel);
+                });
+
+                it("returns a corresponding identifier", function () {
+                    expect(column.value(mockDomainObject))
+                        .toEqual(testModel.relationships.modes[testIndex]);
+                });
+
+                it("returns nothing when relationships are exceeded", function () {
+                    testModel.relationships.modes = [ 'foo' ];
+                    expect(column.value(mockDomainObject)).toEqual("");
+                });
+
+                it("returns nothing when mode relationships are absent", function () {
+                    delete testModel.relationships.modes;
+                    expect(column.value(mockDomainObject)).toEqual("");
+                });
+            });
+
+        });
+    }
+);
\ No newline at end of file
diff --git a/platform/features/timeline/test/actions/TimelineColumnizerSpec.js b/platform/features/timeline/test/actions/TimelineColumnizerSpec.js
new file mode 100644
index 0000000000..9eacf4f3b3
--- /dev/null
+++ b/platform/features/timeline/test/actions/TimelineColumnizerSpec.js
@@ -0,0 +1,129 @@
+/*****************************************************************************
+ * Open MCT Web, Copyright (c) 2009-2015, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT Web is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT Web includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+/*global define,describe,it,expect,beforeEach,waitsFor,jasmine,window,afterEach*/
+
+define(
+    ['../../src/actions/TimelineColumnizer'],
+    function (TimelineColumnizer) {
+        describe("TimelineColumnizer", function () {
+            var mockDomainObjects,
+                testMetadata,
+                exporter;
+
+            function makeMockDomainObject(model, index) {
+                var mockDomainObject = jasmine.createSpyObj(
+                    'domainObject-' + index,
+                    [
+                        'getId',
+                        'getCapability',
+                        'useCapability',
+                        'hasCapability',
+                        'getModel'
+                    ]
+                );
+                mockDomainObject.getId.andReturn('id-' + index);
+                mockDomainObject.getModel.andReturn(model);
+                mockDomainObject.useCapability.andCallFake(function (c) {
+                    return c === 'metadata' && [];
+                });
+                return mockDomainObject;
+            }
+
+            beforeEach(function () {
+                var mockTimespan = jasmine.createSpyObj(
+                    'timespan',
+                    [ 'getStart', 'getEnd' ]
+                );
+
+                testMetadata = [
+                    { name: "abc", value: 123 },
+                    { name: "xyz", value: 456 }
+                ];
+
+                mockDomainObjects = [
+                    { composition: [ 'a', 'b', 'c' ] },
+                    { relationships: { modes: [ 'x', 'y' ] } },
+                    { }
+                ].map(makeMockDomainObject);
+
+                mockDomainObjects[1].hasCapability.andCallFake(function (c) {
+                    return c === 'timespan';
+                });
+                mockDomainObjects[1].useCapability.andCallFake(function (c) {
+                    return c === 'timespan' ? Promise.resolve(mockTimespan) :
+                        c === 'metadata' ? [] : undefined;
+                });
+                mockDomainObjects[2].useCapability.andCallFake(function (c) {
+                    return c === 'metadata' && testMetadata;
+                });
+
+                exporter = new TimelineColumnizer(mockDomainObjects);
+            });
+
+            describe("rows", function () {
+                var rows;
+
+                beforeEach(function () {
+                    exporter.rows().then(function (r) {
+                        rows = r;
+                    });
+                    waitsFor(function () {
+                        return rows !== undefined;
+                    });
+                });
+
+
+                it("include one row per domain object", function () {
+                    expect(rows.length).toEqual(mockDomainObjects.length);
+                });
+
+                it("includes identifiers for each domain object", function () {
+                    rows.forEach(function (row, index) {
+                        var id = mockDomainObjects[index].getId();
+                        expect(row.indexOf(id)).not.toEqual(-1);
+                    });
+                });
+            });
+
+            describe("headers", function () {
+                var headers;
+
+                beforeEach(function () {
+                    headers = exporter.headers();
+                });
+
+                it("contains all metadata properties", function () {
+                    testMetadata.forEach(function (property) {
+                        expect(headers.indexOf(property.name))
+                            .not.toEqual(-1);
+                    });
+                });
+
+                it("contains timespan properties", function () {
+                    expect(headers.indexOf("Start")).not.toEqual(-1);
+                    expect(headers.indexOf("End")).not.toEqual(-1);
+                });
+            });
+
+        });
+    }
+);
diff --git a/platform/features/timeline/test/actions/TimelineTraverserSpec.js b/platform/features/timeline/test/actions/TimelineTraverserSpec.js
new file mode 100644
index 0000000000..6962373ff9
--- /dev/null
+++ b/platform/features/timeline/test/actions/TimelineTraverserSpec.js
@@ -0,0 +1,137 @@
+/*****************************************************************************
+ * Open MCT Web, Copyright (c) 2009-2015, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT Web is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT Web includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+/*global define,describe,it,expect,beforeEach,waitsFor,jasmine,window,afterEach*/
+
+define([
+    "../../src/actions/TimelineTraverser"
+], function (TimelineTraverser) {
+    'use strict';
+
+    describe("TimelineTraverser", function () {
+        var testModels,
+            mockDomainObjects,
+            traverser;
+
+        function addMockDomainObject(id) {
+            var mockDomainObject = jasmine.createSpyObj(
+                    'domainObject-' + id,
+                    [
+                        'getId',
+                        'getCapability',
+                        'useCapability',
+                        'hasCapability',
+                        'getModel'
+                    ]
+                ),
+                mockRelationships,
+                model = testModels[id];
+
+            mockDomainObject.getId.andReturn(id);
+            mockDomainObject.getModel.andReturn(model);
+
+            mockDomainObject.hasCapability.andCallFake(function (c) {
+                return c === 'composition' ? !!model.composition :
+                    c === 'relationship' ? !!model.relationships :
+                        false;
+            });
+
+            if (!!model.composition) {
+                mockDomainObject.useCapability.andCallFake(function (c) {
+                    return c === 'composition' &&
+                        Promise.resolve(model.composition.map(function (id) {
+                            return mockDomainObjects[id];
+                        }));
+                });
+            }
+
+            if (!!model.relationships) {
+                mockRelationships = jasmine.createSpyObj(
+                    'relationship',
+                    ['getRelatedObjects']
+                );
+                mockRelationships.getRelatedObjects.andCallFake(function (k) {
+                    var ids = model.relationships[k] || [];
+                    return Promise.resolve(ids.map(function (id) {
+                        return mockDomainObjects[id];
+                    }));
+                });
+                mockDomainObject.getCapability.andCallFake(function (c) {
+                    return c === 'relationship' && mockRelationships;
+                });
+            }
+
+            mockDomainObjects[id] = mockDomainObject;
+        }
+
+        beforeEach(function () {
+            testModels = {
+                a: { composition: [ 'b', 'c' ]},
+                b: { composition: [ 'c' ] },
+                c: { relationships: { modes: [ 'd' ] } },
+                d: {},
+                unreachable: {}
+            };
+
+            mockDomainObjects = {};
+            Object.keys(testModels).forEach(addMockDomainObject);
+
+            traverser = new TimelineTraverser(mockDomainObjects.a);
+        });
+
+        describe("buildObjectList", function () {
+            var objects;
+
+            function contains(id) {
+                return objects.some(function (object) {
+                    return object.getId() === id;
+                });
+            }
+
+            beforeEach(function () {
+                traverser.buildObjectList().then(function (objectList) {
+                    objects = objectList;
+                });
+                waitsFor(function () {
+                    return objects !== undefined;
+                });
+            });
+
+            it("includes the object originally passed in", function () {
+                expect(contains('a')).toBe(true);
+            });
+
+            it("includes objects reachable via composition", function () {
+                expect(contains('b')).toBe(true);
+                expect(contains('c')).toBe(true);
+            });
+
+            it("includes objects reachable via relationships", function () {
+                expect(contains('d')).toBe(true);
+            });
+
+            it("does not include unreachable objects", function () {
+                expect(contains('unreachable')).toBe(false);
+            });
+        });
+
+    });
+});
\ No newline at end of file
diff --git a/platform/features/timeline/test/actions/TimespanColumnSpec.js b/platform/features/timeline/test/actions/TimespanColumnSpec.js
new file mode 100644
index 0000000000..f4970b778e
--- /dev/null
+++ b/platform/features/timeline/test/actions/TimespanColumnSpec.js
@@ -0,0 +1,94 @@
+/*****************************************************************************
+ * Open MCT Web, Copyright (c) 2009-2015, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT Web is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT Web includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+/*global define,describe,it,expect,beforeEach,waitsFor,jasmine,window,afterEach*/
+
+define(
+    ['../../src/actions/TimespanColumn', '../../src/TimelineFormatter'],
+    function (TimespanColumn, TimelineFormatter) {
+        describe("TimespanColumn", function () {
+            var testTimes,
+                mockTimespan,
+                mockDomainObject,
+                column;
+
+            beforeEach(function () {
+                testTimes = {
+                    start: 101000,
+                    end: 987654321
+                };
+                mockTimespan = jasmine.createSpyObj(
+                    'timespan',
+                    [ 'getStart', 'getEnd' ]
+                );
+                mockDomainObject = jasmine.createSpyObj(
+                    'domainObject',
+                    [ 'useCapability', 'hasCapability' ]
+                );
+                mockTimespan.getStart.andReturn(testTimes.start);
+                mockTimespan.getEnd.andReturn(testTimes.end);
+                mockDomainObject.useCapability.andCallFake(function (c) {
+                    return c === 'timespan' && Promise.resolve(mockTimespan);
+                });
+                mockDomainObject.hasCapability.andCallFake(function (c) {
+                    return c === 'timespan';
+                });
+            });
+
+            [ "start", "end" ].forEach(function (bound) {
+                describe("when referring to " + bound + " times", function () {
+                    var name = bound.charAt(0).toUpperCase() + bound.slice(1);
+
+                    beforeEach(function () {
+                        column = new TimespanColumn(bound === "start");
+                    });
+
+                    it("is named \"" + name + "\"", function () {
+                        expect(column.name()).toEqual(name);
+                    });
+
+                    describe("value", function () {
+                        var testFormatter,
+                            value;
+
+                        beforeEach(function () {
+                            value = undefined;
+                            testFormatter = new TimelineFormatter();
+                            column.value(mockDomainObject).then(function (v) {
+                                value = v;
+                            });
+                            waitsFor(function () {
+                                return value !== undefined;
+                            });
+                        });
+
+                        it("returns a formatted " + bound + " time", function () {
+                            var expected =
+                                testFormatter.format(testTimes[bound]);
+                            expect(value).toEqual(expected);
+                        });
+                    });
+                });
+            });
+
+        });
+    }
+);
\ No newline at end of file