U.S. Air Force Airmen assigned to the 633rd Civil Engineer Squadron practice convoy training during a Prime Base Engineer Emergency Force training at Joint Base Langley-Eustis, Va., June 15, 2017. Throughout the convoy training, the Airmen practiced their situational awareness by finding and identifying simulated improvised explosive devices. (U.S. Air Force photo/Airman 1st Class Kaylee Dubois)