171002-N-FP878-011 IRISH SEA (Oct. 2, 2017) Electronics Technician 1st Class Trevor White tests an alarm panel aboard the Arleigh Burke-class guided-missile destroyer USS Donald Cook (DDG 75) during exercise Formidable Shield (FS) 2017. FS-17 is a U.S. 6th Fleet-led, Naval Striking and Support Forces NATO-conducted exercise which will 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 1st Class Theron J. Godbold/Released)