A Marine disconnects a hose from a water pump at a

A Marine disconnects a hose from a water pump at a water purification site during the 11th Marine Expeditionary Unit’s Field Exercise aboard Marine Corps Base Camp Pendleton, Calif., May 10, 2015. The water purification system’s cyclonic separator filters sand from ocean water, which is then purified into drinkable water. MEUEX is designed to test the 11th MEU’s ability to plan, brief and execute missions, while commanding and controlling forces from a shore-based expeditionary site. The Marine is a water support specialist with Combat Logistics Battalion 11, 11th MEU. (U.S. Marine Corps photo by Sgt. Xzavior T. McNeal/Released)