190224-N-JX484-409 NORTH SEA (Feb. 24, 2019) The guided-missile destroyer USS Gravely (DDG 107) prepares to receive fuel from the German navy replenishment tanker FGS Spessart (A 1442) during a replenishment-at-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)