171017-N-VR594-0031 ARABIAN GULF (Oct. 17, 2017) Quartermaster Seaman Sebastian Arguello Riquelme, from Miami, conducts preventative maintenance on a marine sextant aboard the Ticonderoga-class guided-missile cruiser USS Princeton (CG 59). Princeton is deployed in the U.S. 5th Fleet area of operations in support of maritime security operations designed to reassure allies and partners, and preserve the freedom of navigation and the free flow of commerce in the region. (U.S. Navy photo by Mass Communication Specialist 3rd Class Kelsey J. Hockenberger/Released)