SEA OF JAPAN (Sept. 9, 2016) A MK 45 5 inch gun is fired during gunnery exercises aboard the guided-missile destroyer USS Decatur (DDG 73). Decatur, along with guided-missile destroyers USS Momsen (DDG 92) and USS Spruance (DDG 111), are deployed in support of maritime security and stability in the Indo-Asia-Pacific as part of a U.S. 3rd Fleet Pacific Surface Action Group (PAC SAG) under Commander, Destroyer Squadron 31 (CDS 31). (U.S. Navy photo by Mass Communication Specialist 3rd Class Gerald Dudley Reynolds/Released)