Dry Dock 5 (DD5) construction progresses at Pearl Harbor Naval Shipyard & Intermediate Maintenance Facility as part of the Shipyard Infrastructure Optimization Program (SIOP). OICC PHNSY executes Naval Facilities Engineering Systems Command (NAVFAC) mission to deliver facilities and infrastructure through SIOP, enhancing the Navy’s ability to overhaul, repair and modernize submarines and support current and future classes of nuclear-powered warships. (U.S. Navy photo by Corwin Colbert)