190509-N-JX484-060 BALTIC SEA (May 9, 2019) Fire Controlman 1st Class David Nunez cleans the barrel of a close-in weapons system during a fresh water wash down aboard the guided-missile destroyer USS Gravely (DDG 107). Gravely is underway on a scheduled deployment as the flagship of Standing NATO Maritime Group 1 to conduct maritime operations and provide a continuous maritime capability for NATO in the northern Atlantic. (U.S. Navy photo by Mass Communication Specialist 2nd Class Mark Andrew Hays/Released)