U.S. Marines with the 13th Marine Expeditionary Unit (MEU) change a tire on an MV-22 Osprey tiltrotor aircraft in the hangar bay of the amphibious assault ship USS Boxer (LHD 4) in the Persian Gulf Dec. 3, 2013. The Boxer Amphibious Ready Group and Marines with the 13th MEU deployed to the U.S. 5th Fleet in support of maritime security operations and theater security cooperation efforts.