diff --git a/platform/features/timeline/bundle.js b/platform/features/timeline/bundle.js
index eec6113054..b97d80adc7 100644
--- a/platform/features/timeline/bundle.js
+++ b/platform/features/timeline/bundle.js
@@ -38,6 +38,7 @@ define([
     "./src/capabilities/CostCapability",
     "./src/directives/MCTSwimlaneDrop",
     "./src/directives/MCTSwimlaneDrag",
+    "./src/directives/MCTResourceGraphDrop",
     "./src/services/ObjectLoader",
     "./src/chart/MCTTimelineChart",
     "text!./res/templates/values.html",
@@ -69,6 +70,7 @@ define([
     CostCapability,
     MCTSwimlaneDrop,
     MCTSwimlaneDrag,
+    MCTResourceGraphDrop,
     ObjectLoader,
     MCTTimelineChart,
     valuesTemplate,
@@ -577,6 +579,13 @@ define([
                         "$interval",
                         "$log"
                     ]
+                },
+                {
+                    "key": "mctResourceGraphDrop",
+                    "implementation": MCTResourceGraphDrop,
+                    "depends": [
+                        "dndService"
+                    ]
                 }
             ],
             "services": [
diff --git a/platform/features/timeline/res/sass/_timelines.scss b/platform/features/timeline/res/sass/_timelines.scss
index 0ad22dba21..06e3492f2c 100644
--- a/platform/features/timeline/res/sass/_timelines.scss
+++ b/platform/features/timeline/res/sass/_timelines.scss
@@ -38,6 +38,10 @@
     .l-timeline-pane {
         @include absPosDefault();
 
+		&.drop-over {
+			background-color: lighten($colorEditAreaBg, 5%);
+		}
+
 	    .l-width-control {
 		    position: relative;
 	    }
diff --git a/platform/features/timeline/res/templates/timeline.html b/platform/features/timeline/res/templates/timeline.html
index af71962bca..8f92c7a1dc 100644
--- a/platform/features/timeline/res/templates/timeline.html
+++ b/platform/features/timeline/res/templates/timeline.html
@@ -77,7 +77,8 @@
         <mct-splitter></mct-splitter>
 
         <!-- BOTTOM PANE RESOURCE LEGEND -->
-        <div class="split-pane-component abs l-timeline-pane t-pane-h l-pane-btm s-timeline-resource-legend l-timeline-resource-legend">
+        <div mct-resource-graph-drop
+             class="split-pane-component abs l-timeline-pane t-pane-h l-pane-btm s-timeline-resource-legend l-timeline-resource-legend">
             <div class="l-title s-title">{{ngModel.title}}Resource Graph Legend</div>
             <div class="l-legend-items legend">
                 <mct-include key="'timeline-legend-item'"
diff --git a/platform/features/timeline/src/directives/MCTResourceGraphDrop.js b/platform/features/timeline/src/directives/MCTResourceGraphDrop.js
new file mode 100644
index 0000000000..86ccabb2e6
--- /dev/null
+++ b/platform/features/timeline/src/directives/MCTResourceGraphDrop.js
@@ -0,0 +1,81 @@
+/*****************************************************************************
+ * Open MCT, Copyright (c) 2009-2016, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT 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 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.
+ *****************************************************************************/
+
+define(
+    ['./SwimlaneDragConstants'],
+    function (SwimlaneDragConstants) {
+
+        /**
+         * Defines the `mct-resource-graph-drop` directive. When a drop occurs
+         * on an element with this attribute, the swimlane targeted by the drop
+         * will receive the dropped domain object (at which point it can handle
+         * the drop, typically by toggling the swimlane graph.)
+         * @param {DndService} dndService drag-and-drop service
+         */
+        function MCTResourceGraphDrop(dndService) {
+
+            function link(scope, element, attrs) {
+                // Handle dragover
+                element.on('dragover', function (e) {
+                    var swimlane = dndService.getData(
+                        SwimlaneDragConstants.TIMELINE_SWIMLANE_DRAG_TYPE
+                    );
+
+                    if (typeof swimlane !== "undefined" && !swimlane.graph()) {
+                        element.addClass('drop-over');
+                        scope.$apply();
+                        e.preventDefault();
+                    }
+                });
+                // Handle drops
+                element.on('drop', function (e) {
+                    var swimlane = dndService.getData(
+                        SwimlaneDragConstants.TIMELINE_SWIMLANE_DRAG_TYPE
+                    );
+
+                    element.removeClass('drop-over');
+
+                    // Only toggle if the graph isn't already set
+                    if (typeof swimlane !== "undefined" && !swimlane.graph()) {
+                        swimlane.toggleGraph();
+                        e.preventDefault();
+                    }
+                });
+                // Clear highlights when drag leaves this swimlane
+                element.on('dragleave', function (e) {
+                    element.removeClass('drop-over');
+                    scope.$apply();
+                    e.preventDefault();
+                });
+            }
+
+            return {
+                // Applies to attributes
+                restrict: "A",
+                // Link using above function
+                link: link
+            };
+        }
+
+        return MCTResourceGraphDrop;
+    }
+);
diff --git a/platform/features/timeline/test/directives/MCTResourceGraphDropSpec.js b/platform/features/timeline/test/directives/MCTResourceGraphDropSpec.js
new file mode 100644
index 0000000000..334c630027
--- /dev/null
+++ b/platform/features/timeline/test/directives/MCTResourceGraphDropSpec.js
@@ -0,0 +1,159 @@
+/*****************************************************************************
+ * Open MCT, Copyright (c) 2009-2016, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT 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 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.
+ *****************************************************************************/
+
+define(
+    ['../../src/directives/MCTResourceGraphDrop', '../../src/directives/SwimlaneDragConstants'],
+    function (MCTResourceGraphDrop, SwimlaneDragConstants) {
+
+        describe("The mct-resource-graph-drop directive", function () {
+            var mockDndService,
+                mockScope,
+                mockElement,
+                testAttrs,
+                mockSwimlane,
+                testEvent,
+                handlers,
+                directive;
+
+            beforeEach(function () {
+                handlers = {};
+
+                mockDndService = jasmine.createSpyObj(
+                    'dndService',
+                    ['setData', 'getData', 'removeData']
+                );
+                mockScope = jasmine.createSpyObj('$scope', ['$eval', '$apply']);
+                mockElement = jasmine.createSpyObj('element', ['on', 'addClass', 'removeClass']);
+                testAttrs = { mctSwimlaneDrop: "mockSwimlane" };
+                mockSwimlane = jasmine.createSpyObj(
+                    "swimlane",
+                    ['graph', 'toggleGraph']
+                );
+
+                testEvent = {
+                    dataTransfer: { getData: jasmine.createSpy() },
+                    preventDefault: jasmine.createSpy(),
+                    stopPropagation: jasmine.createSpy()
+                };
+
+                testEvent.dataTransfer.getData.andReturn('abc');
+                mockDndService.getData.andCallFake(function (key) {
+                    return key === SwimlaneDragConstants.TIMELINE_SWIMLANE_DRAG_TYPE ?
+                        mockSwimlane : undefined;
+                });
+
+                mockSwimlane.graph.andReturn(false);
+
+                directive = new MCTResourceGraphDrop(mockDndService);
+                directive.link(mockScope, mockElement, testAttrs);
+
+                mockElement.on.calls.forEach(function (call) {
+                    handlers[call.args[0]] = call.args[1];
+                });
+            });
+
+            it("is available as an attribute", function () {
+                expect(directive.restrict).toEqual("A");
+            });
+
+            [false, true].forEach(function (graphing) {
+                describe("when swimlane graph is " + (graphing ? "" : "not ") + "enabled", function () {
+                    beforeEach(function () {
+                        mockSwimlane.graph.andReturn(graphing);
+                    });
+
+
+                    describe("on dragover", function () {
+                        var prefix = !graphing ? "does" : "does not";
+
+                        beforeEach(function ()  {
+                            handlers.dragover(testEvent);
+                        });
+
+                        it(prefix + " add a drop-over class", function () {
+                            var expectAddClass = expect(mockElement.addClass);
+                            (!graphing ? expectAddClass : expectAddClass.not)
+                                .toHaveBeenCalledWith('drop-over');
+                        });
+
+                        it(prefix + " call $apply on scope", function () {
+                            var expectApply = expect(mockScope.$apply);
+                            (!graphing ? expectApply : expectApply.not)
+                                .toHaveBeenCalled();
+                        });
+
+                        it(prefix + " prevent default", function () {
+                            var expectPreventDefault = expect(testEvent.preventDefault);
+                            (!graphing ? expectPreventDefault : expectPreventDefault.not)
+                                .toHaveBeenCalled();
+                        });
+                    });
+
+                    describe("on drop", function () {
+                        var prefix = !graphing ? "does" : "does not";
+
+                        beforeEach(function ()  {
+                            handlers.drop(testEvent);
+                        });
+
+                        it("removes any drop-over class", function () {
+                            expect(mockElement.removeClass)
+                                .toHaveBeenCalledWith('drop-over');
+                        });
+
+                        it(prefix + " toggle the swimlane's resource graph", function () {
+                            var expectToggle = expect(mockSwimlane.toggleGraph);
+                            (!graphing ? expectToggle : expectToggle.not)
+                                .toHaveBeenCalled();
+                        });
+
+                        it(prefix + " prevent default", function () {
+                            var expectPreventDefault = expect(testEvent.preventDefault);
+                            (!graphing ? expectPreventDefault : expectPreventDefault.not)
+                                .toHaveBeenCalled();
+                        });
+                    });
+
+                    describe("on dragleave", function () {
+                        beforeEach(function ()  {
+                            handlers.dragleave(testEvent);
+                        });
+
+                        it("removes any drop-over class", function () {
+                            expect(mockElement.removeClass)
+                                .toHaveBeenCalledWith('drop-over');
+                        });
+
+                        it("calls $apply on scope", function () {
+                            expect(mockScope.$apply).toHaveBeenCalled();
+                        });
+
+                        it("calls preventDefault on events", function () {
+                            expect(testEvent.preventDefault).toHaveBeenCalled();
+                        });
+                    });
+                });
+            });
+
+        });
+    }
+);