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National Security Journal on MSN
SR-71 Blackbird: The Mach 3 Spy Plane That Shook the U.S. Military To Its Core
Key Points and Summary – The SR-71 Blackbird delivered unmatched Mach-3 recon, but its costs proved fatal. -Each flight hour ran $200,000–$300,000, driven by extreme maintenance, heat-damaged coatings ...
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