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The Arleigh Burke-class guided missile destroyer USS Rafael Peralta (DDG 115) fires the Mark 45 5-inch light-weight gun during a live-fire exercise while operating in the Philippine Sea, Jan. 20. Rafael Peralta is assigned to Commander, Task Force 71/Destroyer Squadron (DESRON) 15, the Navy’s largest forward-deployed DESRON and the U.S. 7th Fleet’s principal surface force.