Explosive ordnance disposal Airmen assigned to the 812th Civil Engineer Squadron, 412th Test Wing, prepare unexploded ordnance and training munitions for demolition at the Precision Impact Range Area at Edwards Air Force Base, Calif., May 7, 2020. The 412th TW uses the PIRA to conduct weapons and payload drops for flight tests. (U.S. Air Force photo by Giancarlo Casem)