As early as 1952, engineers at Boeing Aircraft were working on designs for a Super-Sonic Transport (SST) that could ferry passengers coast-to-coast or from Europe and Asia at twice the speed of sound.  However, it wasn't until 1963 that President John F. Kennedy formally committed the U.S. government to backing such a venture, this in response to the joint British and French plan to build their own SST, the Concorde.   By 1966, Boeing had settled on a swing-wing design with a droop-nose, designated the 2707, a plane capable of carrying up 350 passengers at 1,800 mph.  In 1967, a canard was added to the plane, now designated the 2702-200.  Although a mock-up of the aircraft was built and extensive wind-tunnel tests made, noise, cost and environmental concerns ultimately scuttled this ambitious project, leaving the SST field to the British, the French and - very briefly - to the Russians with their ill-fated TU-144.

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