diff --git a/cave/com.raytheon.viz.aviation/src/com/raytheon/viz/aviation/observer/TafMonitorDlg.java b/cave/com.raytheon.viz.aviation/src/com/raytheon/viz/aviation/observer/TafMonitorDlg.java
index 2cc083d609..b21c162549 100644
--- a/cave/com.raytheon.viz.aviation/src/com/raytheon/viz/aviation/observer/TafMonitorDlg.java
+++ b/cave/com.raytheon.viz.aviation/src/com/raytheon/viz/aviation/observer/TafMonitorDlg.java
@@ -134,6 +134,7 @@ import com.raytheon.viz.ui.dialogs.ICloseCallback;
  * 10/04/2012   1229        rferrel     Changes for non-blocking ClimateMenuDlg.
  * 10/09/2012   1229        rferrel     Made dialog non-blocking.
  * 10/10/2012   1229        rferrel     Changes for non-blocking ResourceEditorDlg.
+ * 10/10/2012   1229        rferrel     Changes for non-blocking TransmissionQueueDlg.
  * 
  * </pre>
  * 
@@ -242,6 +243,8 @@ public class TafMonitorDlg extends CaveSWTDialog {
 
     private ClimateMenuDlg climateMenuDlg;
 
+    private TransmissionQueueDlg tqDlg;
+
     /**
      * Constructor.
      * 
@@ -684,8 +687,13 @@ public class TafMonitorDlg extends CaveSWTDialog {
         queueBtn.addSelectionListener(new SelectionAdapter() {
             @Override
             public void widgetSelected(SelectionEvent event) {
-                TransmissionQueueDlg tqd = new TransmissionQueueDlg(shell);
-                tqd.open();
+                if (tqDlg == null || tqDlg.getShell() == null
+                        || tqDlg.isDisposed()) {
+                    tqDlg = new TransmissionQueueDlg(shell);
+                    tqDlg.open();
+                } else {
+                    tqDlg.bringToTop();
+                }
             }
         });
     }
diff --git a/cave/com.raytheon.viz.aviation/src/com/raytheon/viz/aviation/utility/TransmissionQueueDlg.java b/cave/com.raytheon.viz.aviation/src/com/raytheon/viz/aviation/utility/TransmissionQueueDlg.java
index f6ff776df9..f666f87cdc 100644
--- a/cave/com.raytheon.viz.aviation/src/com/raytheon/viz/aviation/utility/TransmissionQueueDlg.java
+++ b/cave/com.raytheon.viz.aviation/src/com/raytheon/viz/aviation/utility/TransmissionQueueDlg.java
@@ -60,6 +60,7 @@ import com.raytheon.viz.ui.widgets.ToggleSelectList;
  * ------------ ---------- ----------- --------------------------
  * 28 FEB 2008  938        lvenable    Initial creation
  * 14 MAY 2012  14715      rferrel     Use EDEX to perform requests.
+ * 10 OCT 2012  1229       rferrel     Make dialog non-blocking.
  * 
  * </pre>
  * 
@@ -157,7 +158,8 @@ public class TransmissionQueueDlg extends CaveSWTDialog {
      */
     public TransmissionQueueDlg(Shell parent) {
         super(parent, SWT.DIALOG_TRIM | SWT.RESIZE,
-                CAVE.PERSPECTIVE_INDEPENDENT | CAVE.MODE_INDEPENDENT);
+                CAVE.PERSPECTIVE_INDEPENDENT | CAVE.MODE_INDEPENDENT
+                        | CAVE.DO_NOT_BLOCK);
         setText("AvnFPS Transmission Queue");
     }