The North American Aviation XB-70 Valkyrie was the prototype version of the planned B-70 nuclear-armed, deep-penetration supersonic strategic bomber for the United States Air Force Strategic Air Command. Designed in the late 1950s by North American Aviation (NAA), the six-engined Valkyrie was capable of cruising for thousands of miles at Mach 3+ while flying at 70,000 feet (21,000 m).
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Season 1(39 episode) |
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Season 2(7 episode) |
Season 3(4 episode) |
Season 4(13 episode) |
Season 5(13 episode) |
Season 6(11 episode) |
Season 7(23 episode) |
Season 8(8 episode) |
Season 9(6 episode) |