180418-N-ZG607-0021 U.S. 5TH FLEET AREA OF OPERATIONS (April 18, 2018) Aviation Electronics Technician 3rd Class Casey Holland calibrates a servo module test set aboard the Wasp-class amphibious assault ship USS Iwo Jima (LHD 7) April 18, 2018. Iwo Jima, homeported in Mayport, Fla., is on a scheduled 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 the free flow of commerce in the region. (U.S. Navy photo by Mass Communications Specialist Seaman Dominick A. Cremeans/Released)