U.S. Air Force Gen. Mike Hostage, commander of Air Combat Command, observes as Lt. Col. Brian Kelly, 27th Fighter Squadron assistant director of operations, demonstrates the use of a GPS inside of a T-38 Talon March 27, 2012 at Langley Air Force Base, Va. Hostage toured various units and work centers of the 1st Fighter Wing during his immersion at Joint Base Langley-Eustis. (U.S. Air Force photo by Senior Airman Stephanie Rubi/Released)