U.S. Marines dive into water survival training
U.S. Marine Lance Cpl. Cody Kelton, 3rd Battalion, 8th Marine Regiment, completes a 250-meter swim as part of the intermediate course of USMC Water Survival Training, June 10, 2015, at Camp Lejeune, North Carolina. In order to pass this portion of the course, Marines had to properly perform a pencil dive and swim five laps in the 50-meter-wide pool without touching the bottom or sides. (U.S. Air Force photo/Senior Airman Brittain Crolley)