180614-N-ZG607-0022 U.S. 5TH FLEET AREA OF OPERATIONS (June 14, 2018) Machinist’s Mate 2nd Class Kevin Rumphol checks a centrifuge tube in the oil lab aboard the Wasp-class amphibious assault ship USS Iwo Jima (LHD 7). Iwo Jima is homeported in Mayport, Fla., and is on deployment to the U.S. 5th Fleet area of operations in support of maritime security operations to reassure allies and partners, and preserve the freedom of navigation and free flow of commerce in the region. (U.S. Navy photo by Mass Communication Specialist 3rd Class Dominick A. Cremeans/Released)