170624-N-VR594-0130 PACIFIC OCEAN (June 24, 2017) The Ticonderoga-class guided-missile cruiser USS Princeton (CG 59) fires its Mark 45 5-inch gun during a live-fire exercise. Princeton is on an underway period in the U.S. 7th fleet area of operations. 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 Kelsey J. Hockenberger/Released)