F-16 maintainers from Shaw Air Force Base, S.C., check out one of their aircraft May 6 at Hill AFB. Aircraft from Shaw and other units are participating May 5-15 in an the Air Force Weapon System Evaluation program air-to-ground exercise known as "Combat Hammer." During the exercise, the units will drop munitions in realistic combat scenarios at the Utah Test and Training Range. (U.S. Air Force photo by Alex R. Lloyd)