Boom Supersonic XB-1 breaks the sound barrier

I always wanted to fly on the Concorde and never got a chance. Today, the XB-1 made the first commercial supersonic flight since the legendary Anglo-French jet last hit Mach 1—and the first ever for a privately-built civil aircraft (at least intentionally). It broke the sound barrier twice over the Mojave desert, first for four minutes and secondly for …