Politcal Boom Supersonic is building its own engine after major manufacturers refused to help. Here's what we know about Symphony, which will power the super-speedy Overture jet. June 22, 2023 2 mins read 72 Views Boom's Overture airliner.American AirlinesBoom is trying to build a Supersonic jet that could cross the Atlantic in 3.5 hours.Last December, it.. Read More