170518-N-PP996-178 PACIFIC OCEAN (May 18, 2017) The Republic of Korea destroyer ROKS Gwanggeatto the Great (DDH 971) fires its 5-inch gun during a live-fire exercise in teh western Pacific. The U.S. Navy has patrolled the Indo-Asia-Pacific routinely for more than 70 years promoting regional peace and security. (U.S. Navy photo by Mass Communication Specialist 3rd Class Danny Kelley/Released)