180125-VQ790-N-071 NEWPORT NEWS, Va. (Jan. 25, 2018) Machinist Mate 3rd class Tyler Stoup verifies Hazardous Material (HAZMAT) has been correctly stored aboard the aircraft carrier USS George Washington (CVN 73). George Washington is undergoing a refueling and 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)