U.S. Marines with the 11th Marine Expeditionary Unit (MEU), replace an M1A1 Abrams tank engine with the help of an M88 tank retriever during sustainment training at D’Arta Plage, Djibouti, Nov. 6. The 11th MEU is deployed to maintain regional security in the U.S. 5th Fleet area of responsibility. (U.S. Marine Corps photos by Gunnery Sgt. Rome M. Lazarus/Released)