A U.S. Marine Corps F/A-18C Hornet aircraft assigned to Marine Fighter Attack Squadron (VMFA) 312 launches from the aircraft carrier USS Harry S. Truman (CVN 75) in the Gulf of Oman Dec. 12, 2013. The Harry S. Truman was underway in the U.S. 5th Fleet area of responsibility conducting maritime security operations, theater security cooperation efforts and missions supporting Operation Enduring Freedom.