151203-N-AO823-090 MEDITERRANEAN SEA (Dec. 3, 2015) Boatswain's Mate 3rd Class D. Kostenbauder salutes an MH-60R Sea Hawk helicopter after a helicopter in-flight refueling aboard guided-missile destroyer USS Bulkeley (DDG 84). Bulkeley, part of the Harry S. Truman Carrier Strike Group, is conducting naval operations in the U.S. 6th Fleet area of operations in support of U.S. national security interests in Europe and Africa. (U.S. Navy photo by Mass Communication Specialist 2nd Class M. J. Lieberknecht/Released)