RIM let us know that all BlackBerry 7 smartphones models running OS 7.0 and OS 7.1 have been approved for use on the United States Deparment of Defense networks. The approval’s timing has been perfect since it coincides with the BlackBerry Trade-up/Trade-in Program to help you updgrade from your old BlackBerry smartphone. For more info on the program you can contact RIM directly at dodsales@rim.com.