2014 Global Strike Challenge
Tech. Sgt. Ryan Walker, 28th Aircraft Maintenance Squadron crew chief, inspects a B-1 bomber during the Global Strike Challenge at Ellsworth Air Force Base, S.D., Sept. 26, 2014. Global Strike Challenge is the world’s premier competition for bomber crews, Intercontinental Ballistic Missile crews and security forces, and includes units from Air Combat Command, Air Force Global Strike Command, Air Force Reserve Command and the Air National Guard. (U.S. Air Force photo by Senior Airman Zachary Hada/Released)