U.S. Navy Ensign Travis Silva, assigned to the guided missile destroyer USS Preble (DDG 88), uses an azimuth to take a navigational bearing to the aircraft carrier USS George Washington (CVN 73) in the East China Sea, Oct. 11, 2013. The Preble was part of the George Washington Carrier Strike Group and was underway in the U.S. 7th Fleet area of responsibility supporting maritime security operations and theater security cooperation efforts. (U.S. Navy photo by Mass Communication Specialist 3rd Class Paul Kelly/Released)