Senior Airman Justin Shields, 28th Aircraft Maintenance Squadron crew chief, inspects the central integrated test system control and display panels in a B-1 bomber during the Global Strike Challenge at Ellsworth Air Force Base, S.D., Sept. 26, 2014. The 28th Bomb Wing is one of seven bomb wings competing for the title of the Air Force’s best bomber wing. (U.S. Air Force photo by Senior Airman Zachary Hada/Released)