170407-M-AS864-013 MEDITERRANEAN SEA (April 7, 2017) Sailors and Marines assigned to the 24th Marine Expeditionary Unit (24th MEU) treat a simulated patient during a casualty evacuation drill aboard the amphibious transport dock ship USS Mesa Verde (LPD 19). (U.S. Marine Corps photo by Gunnery Sgt. Adaecus G. Brooks/Released)