160714-N-MJ645-203 PACIFIC OCEAN – (July 14, 2016) - The Republic of Korea Sejong the Great-class destroyer Sejong the Great (DDG 991) and the Japan Maritime Self-Defense Force destroyer helicopter ship JS Hayuga (DDH 181) steams aft of the guided-missile destroyer USS Chung-Hoon (DDG 93) during a three-ship maneuvering exercise as part of the Rim of the Pacific (RIMPAC) Exercise 2016. Twenty-six nations, 49 ships and submarines, more than 200 aircraft and 25,000 personnel are participating in RIMPAC from June 29 to Aug. 4 in and around the Hawaiian Islands and Southern California. The world's largest international maritime exercise, RIMPAC provides a unique training opportunity that helps participants foster and sustain the cooperative relationships that are critical to ensuring the safety of sea lanes and security on the world's oceans. RIMPAC 2016 is the 25th exercise in the series that began in 1971. (U.S. Navy photo by Mass Communication Specialist 1st Class Marcus L. Stanley/Released)