U.S. Air Force Tech. Sgt. Rodger Jones and Staff Sgt. Matthew Lawrence, 633rd Civil Engineer Squadron pavement and construction equipment technicians, participate during a Prime Base Engineer Emergency Force training at Joint Base Langley-Eustis, Va., April 20, 2017. Each team is required to move items and themselves across a water obstacle in under 20 minutes. (U.S. Air Force photo/Airman 1st Class Kaylee Dubois)