Airmen assigned to the 28th Aircraft Maintenance Squadron perform pre-flight checks on a B-1 bomber at Ellsworth Air Force Base, S.D., July 24, 2012. The 28th AMXS manages the weapons loading and support activities to ensure the B-1 bomber fleet meets the 28th Bomb Wing’s flying requirements. (U.S. Air Force photo by Airman 1st Class Zachary Hada/Released)