190130-N-JX484-079 NORTH SEA (Jan. 30, 2019) The guided-missile destroyer USS Gravely (DDG 107) transits the North Sea. Gravely is underway 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)