Seventy-two-year-old William Boeing came back to visit his former company for the May 14, 1954, rollout of the Model 367-80 at the Renton, Wash., plant. His wife, Bertha, christened the yellow and brown airplane with real champagne, and the Renton High School band played the Air Force theme. It was the prototype for the 707 passenger jet and the KC-135 jet tanker and would be the first member of the "700" family of commercial and military jets.