Airmen from the 28th Bomb Wing form a line behind the Pride Hangar during the wing’s Foreign Object Debris walk on Ellsworth Air Force Base, S.D., Sept. 15, 2011. The group was ensuring the runway was FOD free prior to the base B-1s returning from Dyess Air Force Base, Texas. (U.S. Air Force photo by Airman 1st Class Kate Thornton/Released)