U.S. Air Force Tech. Sgt. Daniel Day, 633rd Security Forces flight chief, conducts water confidence training during a training evaluation at Joint Base Langley-Eustis, Va., April 28, 2017. To accomplish this training evolution, Day had to strip-off his combat vest and recover his weapon after jumping into the Shellbank Fitness Center pool blindfolded. (U.S. Air Force photo by Senior Airman Derek Seifert)