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XB-70 Valkyrie
The XB-70 Valkyrie was a revolutionary experimental aircraft developed by the United States Air Force in the 1960s. It was designed to be a high-altitude, nuclear-capable strategic bomber that could fly at speeds of Mach 3 or more. The Valkyrie was a large, sleek aircraft with six engines and a unique delta wing design that allowed it to reach incredible speeds.