U.S. Navy HM2 Mark L. Warren, left, a corpsman aerospace physiology technician assigned to Aviation Survival Training Center, escorts Lt. Maile L. Richert, an aeromedical safety officer assigned to Marine Aircraft Group 26, to the side of the pool during a water survival training exercise at Marine Corps Air Station Cherry Point, N.C., Dec. 8, 2014. The exercise was conducted to familiarize the Sailors with the air crew endurance survival vests. (U.S. Marine Corps photo by Cpl. Yosselyn A. Munnerlyn/Released)