Naval Tactical Data System
In May and June 1984, for the 40th anniversary of D-Day, "Ike" was deployed to Normandy, France and Portsmouth, England. The port visit in England included a visit from Queen Elizabeth II. After her fifth deployment "Dwight D. Eisenhower" went into Newport News Shipbuilding and Drydock in October 1985 for a major overhaul. The 18-month yard period included the addition of the Close-in Weapons System (CIWS), NATO Sea Sparrow Missile System, Naval Tactical Data System, anti-submarine warfare module, communications upgrades and rehabilitation of 1,831 berths in 25 compartments. She re-entered the fleet in April 1987.