190628-N-VQ790-1040 NEWPORT NEWS, Va. (June 28, 2019) Boatswain’s Mate 3rd Class Laura Taylor, right, assigned to the deck department aboard the Nimitz-class aircraft carrier USS George Washington (CVN 73), practices the proper use of a carbon dioxide portable fire extinguisher during the ship’s damage control (DC) Olympics. George Washington is undergoing refueling complex overhaul (RCOH) at Newport News Shipyard. RCOH is a nearly four-year project performed only once during a carrier’s 50-year service life that includes refueling of the ship’s two nuclear reactors, as well as significant repair, upgrades and modernization. (U.S. Navy photo by Mass Communication Specialist 3rd Class Trey Hutcheson/Released)