170925-N-WV703-0108 ATLANTIC OCEAN (Sept. 25, 2017) The Arleigh Burke-class guided-missile destroyer USS Winston S. Churchill (DDG 81) fires its Phalanx close-in weapons system during a live-fire exercise as part of exercise Formidable Shield 2017. The U.S. 6th Fleet-led, Naval Striking and Support Forces NATO-conducted exercise is designed to improve allied interoperability in a live-fire integrated air and missile defense environment using NATO command and control reporting structures. (U.S. Navy photo by Mass Communication Specialist 2nd Class Amy M. Ressler/Released)