200201-N-VQ790-1016 NEWPORT NEWS, Va. (Feb. 1, 2020) Damage Controlman 3rd Class Andrew Barrett, left, and Machinery Repairman Fireman Frederick Zappone, assigned to the in-port emergency team aboard the Nimitz-class aircraft carrier USS George Washington (CVN 73), use levers to expand the steel-type shoring during a flooding drill. George Washington is undergoing a refueling complex overhaul (RCOH) at the Newport News Shipbuilding shipyard. RCOH is a nearly four-year project performed only once during a carrier’s 50-year service life that includes refueling the ship’s two nuclear reactors, as well as significant repairs, upgrades, and modernization. (U.S. Navy photo by Mass Communication Specialist 2nd Class Trey Hutcheson/Released)