Aurora: The Pentagon's Secret Hypersonic Spyplane by Bill Sweetman
Aurora: The Pentagon's Secret Hypersonic Spyplane

Bill Sweetman

Aurora: The Pentagon's Secret Hypersonic Spyplane

Bill Sweetman

96 pages first pub 1993 (view editions)

informative medium-paced
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Description

Why did the Pentagon retire the SR-71 spyplane in 1990? What has caused sonic booms over the California desert since 1991? What was the triangular craft spotted over the North Sea in 1989? In this groundbreaking book, journalist Bill Sweetman argu...

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