171104-N-LN093-0144 PACIFIC OCEAN (Nov. 4, 2017) The Arleigh Burke-Class guided-missile destroyer USS Michael Murphy (DDG 112) fires its Mark 45 5-inch gun during a live-fire exercise in the Pacific Ocean. Michael Murphy is participating in a sustainment training exercise in preparation for an upcoming deployment. (U.S. Navy photo by Mass Communication Specialist Seaman Jasen Morenogarcia/Released)