Boom Supersonic says it will conduct the first test flight of its ultra-speedy 'baby boom' prototype aircraft later this year

• Colorado startup Boom Supersonic is developing a faster-than-sound jet called Overture.
• The company's first prototype is the 71-foot-long XB-1, which has been nicknamed the "Baby Boom."
• Boom hopes to conduct its first XB-1 flight by the end of this year.

Colorado startup Boom Supersonic is hoping to revive the era of the ultra-speedy Concorde with its Mach 1.7 Overture passenger jet, and its prototype is finally gearing up for its first flight.