WATCH LIVE: 'Boom Supersonic' attempts to break the sound barrier
The American-based company takes a step closer to commercial supersonic travel with XB-1 test flight.
![WATCH LIVE: 'Boom Supersonic' attempts to break the sound barrier](https://a57.foxnews.com/streamcontroller-stage1-ue1-1.s3.amazonaws.com/1024/512/FNC_DEFAULT_720.png?ve=1&tl=1)
The American-based company takes a step closer to commercial supersonic travel with XB-1 test flight.