190501-N-JX484-109 BALTIC SEA (May 1, 2019) The guided-missile destroyer USS Gravely (DDG 107) and the Royal Navy frigate HMS Westminster (F 237) conduct a towing approach exercise while transiting the Baltic Sea. 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)