171009-N-FP878-609 ATLANTIC OCEAN (Oct. 9, 2017) The Canadian frigate HMCS Montreal (FFH 336), left, the Arleigh Burke-class guided-missile destroyer USS Winston S. Churchill (DDG 81) and the British frigate HMS Argylle (F231) are underway in formation conducting a live-fire exercise during exercise Joint Warrior 17-2. The U.K.-led, multinational exercise that develops interoperability and cooperation in all applicable warfare areas. (U.S. Navy photo by Mass Communication Specialist 1st Class Theron J. Godbold/Released)