which is to build that Overture airliner," Scholl said. Boom aims to lock in Overture's overall design in just a week or so and to do the same with the jet's Symphony engines next month ...

"This is such a huge step, building the first civil supersonic jet, you know, right here in America," said Boom advisor and former Chief Engineer Greg Krauland during the company's livestream on X.

Boom hopes its breakthrough will allow supersonic flights over land, making US coast-to-coast flights 90 minutes faster.