170908-N-GR120-054 NORFOLK (Sept. 8, 2017) Cmdr. Jason Sherman, right, assigned to the Nimitz-class aircraft carrier USS George Washington (CVN 73) Lt. Joey Zerra's, son before promoting Zerra to Lt. Cmdr. during a ceremony aboard the Iowa-class battleship USS Wisconsin (BB-64). George Washington is undergoing a refueling and complex overhaul (RCOH) at Newport News Shipyard. RCOH is a four-year project performed only once during a carrier’s 50-year service life that includes refueling of the ship’s two nuclear reactors, significant repairs, upgrades and modernizations. (U.S. Navy photo by Mass Communication Specialist 2nd Class Anna E. Van Nuys/Released)