The only remaining XB-70 Valkyrie superbomber is on display at the National Museum of the U.S. Air Force in Dayton, Ohio. The Cold War-era prototype variant of the planned B-70 nuclear-armed strategic ...
Though it looks like a cartoon and was obsolete before its first flight, this Cold War bomber is one of the fastest aircraft ever built. Here's a closer look. At Mach 3, you travel about 3,000 feet ...
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