National Interest on MSN11d
XB-70 Valkyrie: The Air Force Built a Mach 3 Bomber That Was ObsoleteThe North American XB-70 Valkyrie epitomized Cold War aerospace innovation. Designed to replace the B-52, the Valkyrie ...
National Interest on MSN15d
XB-70 Valkyrie: The Mach 3 Bomber The Air Force Had to Cancela Cold War-era strategic bomber prototype designed to replace the B-52, is now on display at the National Museum of the U.S.
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