Members of the 28th Munitions Squadron, fasten and secure guided bomb units to a load trailer during the Global Strike Challenge at Ellsworth Air Force Base, S.D., Oct. 1, 2012. 450 competitors around the Air Force compete in Global strike challenge for the Fairchild trophy, which honors the best bomb wing in the Air Force. Ellsworth Airmen won the Global Strike Challenge in 2011 and prepared for months to return the Fairchild trophy to Ellsworth Air Force Base. (U.S. Air Force photo by Airman 1st Class Zachary Hada/Released)