Designed to cruise at Mach 3 and outrun any Soviet defense, the XB-70 Valkyrie was supposed to be the future of America's bomber fleet. With cutting-edge technology and revolutionary aerodynamics ...

February 4th, 1969: the XB-70 Valkyrie bomber takes its last flight. Watch this video to remember the occasion or to learn more about this iconic supersonic bomber that still looks futuristic today.