190321-N-PX867-1093 PACIFIC OCEAN (March 21, 2019) Marines assigned to 11th Marine Expeditionary Unit (MEU) conduct maintenance on the rotor of an MV-22B Osprey attached to Marine Medium Tiltrotor Squadron (VMM) 163 on the flight deck of amphibious assault ship USS Boxer (LHD 4). Boxer is underway conducting routine operations as a part of USS Boxer Amphibious Ready Group (ARG) in the eastern Pacific Ocean. (U.S. Navy photo by Mass Communication 3rd Class Justin Whitley/Released)