the world's fastest airplane
the US has the fastest.The SR-71, Blackbird, has a top speed of Mach 3.5,The SR-71 remained the world's fastest and highest-flying airplane in the world
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the US has the fastest.The SR-71, Blackbird, has a top speed of Mach 3.5,The SR-71 remained the world's fastest and highest-flying airplane in the world