The next major expansion was opened in 2004, with the addition of the "J. Elroy McCaw Personal Courage Wing". North of the Red Barn, the wing has of exhibit space on two floors, with more than 25 World War I and World War II aircraft. It also has large collection of model aircraft, including every plane from both wars. Many of these aircraft were from the collection of the Champlin Fighter Museum, formerly in Mesa, Arizona, which closed in 2003. The wing opened on June 6, the sixtieth anniversary of D-Day.