Tech. Sgt. Brandon Sullivan uses a portable maintenance device loaded with joint technical data that's plugged into an F-35 Lightning II trainer April 3, 2012, during a weapons familiarization course at Eglin Air Force Base, Fla. The 17-day course was the first weapons course completed since Eglin AFB’s F-35 Academic Training Center began formal training Mar 19. Sullivan is an aircraft armament systems technician assigned to the 33rd Aircraft Maintenance Squadron at Eglin AFB. (U.S. Air Force photo/Maj. Karen Roganov)