ATLANTIC OCEAN (May 17, 2021) Gas Turbine Systems Technician (Electrical) 3rd Class Joshua Ferdinand, right, shows a fuel sample to Naval Air Crewman (Helicopter) 2nd Class Morgan Larsh during flight operations aboard the Arleigh Burke-class guided-missile destroyer USS Roosevelt (DDG 80), May 17, 2021. At-Sea Demo/Formidable Shield, conducted by Naval Striking and Support Forces NATO on behalf of U.S. Sixth Fleet, is a live-fire integrated air and missile defense (IAMD) exercise that improves Allied interoperability using NATO command and control reporting structures. (U.S. Navy photo by Mass Communication Specialist 2nd Class Andrea Rumple)