U.S. Navy Boatwain's Mate 3rd Class Robert Class, left, signals the crew of an MH-60R Seahawk helicopter assigned to Helicopter Maritime Strike Squadron 51 during night flight operations Sept. 17, 2013, aboard the guided missile destroyer USS Mustin in the Pacific Ocean. The Mustin was on patrol with the George Washington Carrier Strike Group to support security and stability in the U.S. 7th Fleet area of responsibility.