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Boom Supersonic's XB-1 jet breaks sound barrier 3 times on final test flight (video, photos)
Boom will now shift its attentions toward developing Overture, its supersonic passenger jet.
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First independently developed jet breaks the sound barrier over the California desert
A sleek white aircraft became the first independently developed jet to break the sound barrier Tuesday ... to Boom Supersonic and live video of the test flight. The flight at the Mojave Air ...