190509-N-ZU663-703 ATLANTIC OCEAN (May 9, 2019) Ships steam in formation during exercise Formidable Shield 19. Formidable Shield is designed to improve allied interoperability in a live-fire, integrated air and missile defense environment using NATO command and control reporting structures. Nine nations are participating by contributing ships and aircraft, including Canada, Denmark, France, Italy, the Netherlands, Norway, Spain, the United Kingdom and the United States.(U.S. Navy Photo by Mass Communication Specialist 1st Class Susan Damman)