The Lost Era Of Aviation And The Cancelled American SST. When Airlines Ordered Supersonic Jets The Boeing 2707 was intended to be the United States' answer to the Anglo-French Concorde and the Soviet Tupolev Tu-144. It was the centerpiece of the National Supersonic Transport (SST) program, a government-funded initiative launched in the 1960s to ensure American dominance in the next era of commercial aviation. While the military had already mastered high-speed flight with aircraft like the XB-70

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