U.S. Air Force Staff Sgt. Joshua Tomada, 633rd Civil Engineer Squadron electrical systems specialist, secures an area during Prime Base Engineer Emergency Force training at Joint Base Langley-Eustis, Virginia, Nov. 15, 2018. The 633rd CES conducted their monthly combat skills training at Fort Eustis. (U.S. Air Force photo by Airman 1st Class Monica Roybal)