Two decades after the Concorde’s final flight, the boom returned to Mojave. On 22 March 2024, at 07:28 PDT, Boom Supersonic’s XB-1 “Baby Boom” demonstrator lifted off from the same desert airspace where Chuck Yeager had broken the sound barrier in 1947. Piloted by Chief Test Pilot Bill “Doc” Shoemaker, the 68-foot trijet climbed to 7,120 feet and 246 knots, validating carbon-fibre composites, variable-geometry inlets, and digitally optimised aerodynamics intended for a future commercial airliner. Ten months later, on 28 January 2025, test pilot Tristan “Geppetto” Brandenburg pushed the XB-1 through Mach 1.1, making it the first privately developed jet aircraft to achieve supersonic flight. The demonstrator was retired after a second supersonic run on 10 February 2025, having completed its mission as a flying wind-tunnel for the larger Boom Overture. Overture is designed to carry 64 to 80 passengers at Mach 1.7 on 100% sustainable aviation fuel, and it has attracted 130 orders and pre-orders from American Airlines, United Airlines, and Japan Airlines. The XB-1 programme proved that the economics and engineering of supersonic travel could be reborn not by a national consortium, but by a private startup with a dream and a runway in the California desert.