ATLANTIC OCEAN (May 15, 2023) The Arleigh Burke-class guided-missile destroyer USS Oscar Austin (DDG 79), right front, is underway in formation alongside NATO allies in support of exercise Formidable Shield 2023 while operating in the north Atlantic Ocean, May 15, 2023. Formidable Shield is a biennial integrated air and missile defense (IAMD) exercise involving a series of live-fire events against subsonic, supersonic, and ballistic targets, incorporating multiple Allied ships, aircraft, and ground forces working across battlespaces to deliver effects. (U.S. Air Force photo by Senior Airman Jan K. Valle)