Boom will now shift its attentions toward developing Overture, its supersonic passenger jet.

Boom's Supersonic XB-1 jet became the “world’s first independently developed supersonic jet” to break the sound barrier Tuesday.

Boom Supersonic's XB-1 demonstrator jet became the first U.S.-made civilian supersonic jet to break the sound barrier. The independently funded XB-1 reached a speed of Mach 1.122, or about 750 mph ...