Boeing 707, 1963.
UNITED STATES - APRIL 10: Model (scale 1:48) in BOAC livery. The Boeing 707 and its other US contemporary the Douglas DC8 were the American answer to the British Comet for intercontinental jet travel. The 707 was based on the KC135 military tanker from the 1950s and the inherited production capability, coupled with the Comet�s structural problems, allowed the 707 to dominate the long range market until the era of the widebody. (Photo by SSPL/Getty Images)