170117-M-OC926-089 ATLANTIC OCEAN (Jan. 17, 2017) Marines assigned to Battalion Landing Team, 3rd Battalion, 6th Marine Regiment, 24th Marine Expeditionary Unit (24th MEU), carry simulated casualties while conducting a casualty evacuation drill aboard the amphibious transport dock ship USS Mesa Verde (LPD 19) during a composite unit training exercise. The training is the 24th MEU’s final at-sea evaluation designed for Marines and Sailors to increase operational efficiency before deployment. (U.S. Marine Corps photo by Cpl. Hernan Vidana/Released)