A U.S. Marine from the 3rd Battalion, 8th Marine Regiment, packs his equipment to use as a flotation device during the intermediate course of USMC Water Survival Training, June 10, 2015, at Camp Lejeune, North Carolina. Once the equipment was bundled together, Marines had to transfer it from one side of the pool to the other while maintaining positive control of all pieces. (U.S. Air Force photo/Senior Airman Brittain Crolley)