 Complete the following phrase:  On 13 July 1993, Headquarters Twelfth Air Force officially moved from Bergstrom AFB to Davis-Monthan AFB, Arizona. Since then, 12 AF personnel and units have participated in operations in many other parts of the world: SOUTHERN WATCH, PROVIDE COMFORT, DENY FLIGHT, PROVIDE PROMISE, RESTORE HOPE, and JOINT ENDEAVOR. During 