U.S. Air Force Lt. Col. Jeremy Oldham, 633rd Civil Engineer Squadron commander, speaks to Airmen before they begin Prime Base Engineer Emergency Force training at Joint Base Langley-Eustis, Virginia, Nov. 15, 2018. The 633rd CES participated in Prime BEEF training to ensure members remain proficient in executing maneuvers necessary in a deployment environment. (U.S. Air Force photo by Airman 1st Class Monica Roybal)