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In this file courtesy photo, Arleigh Burke-class guided-missile destroyer USS Pinckney (DDG 91) and Japan Maritime Self-Defense Force (JMSDF) ships conduct tactical maneuvers during GUAMEX 2014 in waters near Guam. Pinckney and JMSDF ships Kongo (DDG 173), Murasame (DD 101), Ikazuchi (DD 107), Akebono (DD 108), Ariake (DD 109), Akizuki (DD 115) and Shimakaze (DDG 172) are participating part in GUAMEX 2014, an operation aimed at enhancing the interoperability of the U.S. Navy and JMSDF and strengthening personnel ties between the respective forces.