Navy Seamans Michael Walsh, right, and Chandra Tremayne perform maintenance on a 404-400 jet engine afterburner aboard the aircraft carrier USS Nimitz in Everett, Wash., March 19, 2012. Walsh and Tremayne are aviation machinist's mates airmen. The engine components will be used on an F-18 Legacy aircraft. Nimitz recently arrived at its new homeport of Everett.