Airman 1st Class Benjamin Boice, 28th Aircraft Maintenance Squadron defensive avionics systems technician, inserts a battery into a radar signal simulator after checking it out in the maintenance support section on Ellsworth Air Force Base, S.D., June 26, 2012. Airmen receiving equipment are required to inspect it to reduce discrepancies when turning in the equipment. (U.S. Air Force photo by Airman 1st Class Kate Thornton/Released)