160521-N-YW024-353 PACIFIC OCEAN (May 21, 2016) The Arleigh Burke class guided-missile destroyer USS Hopper (DDG 70) conducts an MK 45 lightweight 5-inch gun live-fire exercise during a scheduled underway in preparation for an upcoming deployment. (U.S. Navy photo by Mass Communication Specialist 3rd Class Katarzyna Kobiljak)
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