A Marine puts on a life vest before retrieving a hose

A Marine puts on a life vest before retrieving a hose from the Pacific Ocean at a water purification site during the 11th Marine Expeditionary Unit’s Field Exercise aboard Marine Corps Base Camp Pendleton, California, May 10, 2015. MEUEX involves all command and control sections from the MEU’s Command Element, Aviation Combat Element, Ground Combat Element, and Logistics Combat Element. The Marines are with Combat Logistics Battalion 11, 11th MEU. (U.S. Marine Corps photo by Sgt. Xzavior T. McNeal/Released)