ARTA BEACH, DJIBOUTI (July 21, 2015) U.S. Marines off-load from a landing craft, air cushion at Arta Beach. Elements of the 15th Marine Expeditionary Unit came ashore in Djibouti to conduct sustainment training to maintain and enhance the skills they developed during their pre-deployment training period. The 15th MEU is currently deployed conducting maritime security operations in the 5th and 6th Fleet areas of responsibility. (U.S. Marine Corps photo by Sgt. Steve H. Lopez/Released)