The B-52, upgraded with stand-off missiles, and what was then the forthcoming FB-111 Aardvark offered cost-effective alternatives without the Valkyrie’s narrow mission profile. So the XB-70 ...
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XB-70 Valkyrie's Last Flight In Aviation HistoryFebruary 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.
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