PORTSMOUTH, Va. (Dec. 1, 2023) Capt. Luke Greene, program manager for Program Management Office-555 (PMO) supporting the Shipyard Infrastructure Optimization Program (SIOP), tours Norfolk Naval Shipyard's Dry Dock 8, Nov. 6, 2023, which is currently being modernized. The Navy is making substantial investments across the four public shipyards through the construction and modernization of dry docks, other infrastructure, and modernized industrial plant equipment. (U.S. Navy photo by Danny De Angelis)