120103-N-VH839-239 ARABIAN GULF (Jan. 3, 2012) Gunner's Mate 3rd Class Patrick Dean performs a maintenance check on an MK 38 MOD 2 25mm machine gun system aboard the Arleigh Burke-class guided-missile destroyer USS Dewey (DDG 105) in preparation for a live-fire exercise. USS Dewey is deployed to the U.S. 5th Fleet area of responsibility conducting maritime security operations. (U.S. Navy photo by Mass Communication Specialist 3rd Class Joshua Keim/Released)

阿拉伯湾 2012/1/3 - 驱逐舰 ’杜威‘ DDG105 的枪炮军士保养 MK 38 MOD 2 25毫米机炮