U.S. Marines with the 15th Marine Expeditionary Unit (MEU) sing the Marine Corps Hymn during a ceremony marking the Corps' 237th birthday in the hangar bay of the amphibious assault ship USS Peleliu (LHA 5) Nov. 10, 2012, in the U.S. 5th Fleet area of responsibility. Peleliu, the flagship of the Peleliu Amphibious Ready Group, was deployed to the region with the amphibious transport dock ship USS Green Bay (LPD 20), the amphibious dock landing ship USS Rushmore (LSD 47) and embarked Marines with the 15th MEU to conduct maritime security operations and theater security cooperation efforts. (U.S. Marine Corps photo by Lance Cpl. Danny L. Shaffer II/Released)