190503-M-EC058-0191 PACIFIC OCEAN (May 3, 2019) Marines with Marine Medium Tiltrotor Squadron (VMM) 163 (Reinforced), 11th Marine Expeditionary Unit (MEU), perform maintenance on a CH-53E Super Stallion during flight operations aboard the amphibious assault ship USS Boxer (LHD 4). The Marines and Sailors of the 11th MEU are conducting routine operations as part of the Boxer Amphibious Ready Group. (U.S. Marine Corps photo by Lance Cpl. Dalton S. Swanbeck/Released)