The XB-70 Valkyrie: The Sad Story of the Biggest and Fastest U.S. Bomber Ever

The XB-70 Valkyrie: The Sad Story of the Biggest and Fastest U.S. Bomber EverWith the growing realization that Soviet SAMs posed an increasing threat to American bombers, the Pentagon started to explore low-level penetration as an alternative. Many leading military strategists of the time believed bombers were too vulnerable to survive the journey into Soviet airspace. As a result, President John F. Kennedy decided to cancel the XB-70 as a frontline  bomber program on March 28, 1961.



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