Other supersonic aircraft, such as the iconic Concorde , have required the work of militaries and governments to become a reality. However, XB-1, designed and built entirely by Boom, has officially become the first American-made and independently developed civil jet to break the sound barrier.

Boom Supersonic’s XB-1 creates a sonic boom inaudible from the ground below when flying at the exact right speed and altitude.

If you've been keeping tabs on aviation news as of late, you saw that Boom Supersonic just recently broke the sound barrier with its XB-1 demonstrator aircraft. Oddly enough, no one on the ground heard a thing during its "boomless" cruise.