U.S. Air Force Tech. Sgt. Charles Shewmaker, 633rd Civil Engineer Squadron Explosive Ordnance Disposal team lead, ties a rope around a simulated explosive device at Langley Air Force Base, Va., Oct. 14, 2015. As an EOD technician, Shewmaker handles live explosives to train for deployed operations. (U.S. Air Force photo by Senior Airman Kimberly Nagle/Released)