The North American XB-70 Valkyrie flew at Mach 3 and rode its own shockwave over the Mojave, but strategic politics and a fatal midair collision ensured only one would survive to reach a museum.
Radio Hangar explores The X B Seventy Valkyrie, the Mach Three Bomber That Folded Its Wingtips to Ride Its Own Shockwave, and the Lone Survivor Standing in Dayton.
The North American XB-70 Valkyrie was America's most technically advanced Cold War bomber - capable of Mach 3 at 70,000 feet but cancelled before entering service.