190226-N-JX484-008 BALTIC SEA (Feb. 26, 2019) Aerographer's Mate 1st Class Christopher Vallejos provides surface weather training to Aerographer's Mate 3rd Class Andrew Gillespie aboard the guided-missile destroyer USS Gravely (DDG 107). Gravely is deployed 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)