U.S. Navy Aviation Structural Mechanic 2nd Class Kyle Walcheske, assigned to Helicopter Maritime Strike Squadron (HSM) 74, performs maintenance on an MH-60R Seahawk helicopter in the hangar bay of the aircraft carrier USS Harry S. Truman (CVN 75) in the Gulf of Oman Dec. 10, 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 in support of Operation Enduring Freedom.