The historic Boeing 367-80, which helped usher in the modern era of jet-engine powered commercial airplanes, departed Seattle on Aug. 24, 2003 on a journey to its new home at the Smithsonian Institution's National Air and Space Museum. Nicknamed the "Dash 80," the airplane first flew on July 15, 1954, and was the prototype for the Boeing 707, the world's first successful commercial airplane with jet engines, and the KC-135 aerial refueling aircraft. The Dash 80 served 18 years as a flying test-laboratory before being donated to the Smithsonian in 1972. It was in storage for 16 years before Boeing and the Smithsonian agreed to its restoration.