U.S. Air Force Tech. Sgt. George Daggett, 633rd Security Forces Squadron swing shift flight chief, performs a recovery swim during a training evolution at Joint Base Langley-Eustis, Va., April 28, 2017. The 633rd SFS Emergency Services Team conducted a test trial for a course future candidates will have to accomplish in order to join the EST ranks. (U.S. Air Force photo/Senior Airman Derek Seifert)