Northrop Grumman Corporation redelivered to the Navy the nuclear-powered aircraft carrier USS Dwight D. Eisenhower (CVN 69) after completing its one and only refueling and complex overhaul in a 50-year life span. two nuclear propulsion plants are fully mission capable. carrier program at Northrop Grumman Newport News. undergo this major life-cycle milestone. spaces, and laundry and berthing spaces. of new paint. another 600 were overhauled in various ship systems. systems and the island house. better radar capabilities. a new radar tower aboard the ship. christened on October 11, 1975 by Mrs. the ship's namesake, President Dwight D. Eisenhower. commissioned by the U.S. the Mediterranean Sea in January 1979. mid-life refueling and complex overhaul.