190502-N-JX484-394 BALTIC SEA (May 2, 2019) Sailors from the guided-missile destroyer USS Gravely (DDG 107) hold the phone and distance line steady during a replenishment-at-sea with the German navy replenishment tanker FGS Rhoen (A1443). 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)