170901-N-FP878-017 ROTA, Spain (Sep. 1, 2017) Matt Oneal, a Naval Sea Systems Command employee, conducts a telemetry test aboard the Arleigh Burke-class guided-missile destroyer USS Donald Cook (DDG 75) in preparation for exercise Formidable Shield 2017. The U.S. 6th-Fleet led, Naval Striking and Support Forces NATO-conducted exercise 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)