190315-N-TF088-1089 NEWPORT NEWS, Va. (March 15, 2019) Capt. Daryle Cardone, executive officer of the Nimitz-class aircraft carrier USS George Washington (CVN 73), places mementos into a time capsule during a mast-stepping ceremony held on the ship’s flight deck. 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 Michael Botts/Released)