Airman 1st Class Christopher Mcgillis, 28th Operations Support Squadron aircrew flight equipment technician, inspects an aircrew survival vest during a routine inspection at the 34th Bomb Squadron on Ellsworth Air Force Base, S.D., July 25, 2012. AFE technicians are responsible for maintaining all survival equipment B-1 aircrews need during training missions. (U.S. Air Force photo by Airman 1st Class Kate Thornton/Released)