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 ...
Article Summary - Years before the SR-71 Blackbird made headlines, its CIA predecessor—the A-12 Oxcart—was already flying Mach 3 reconnaissance over North Vietnam. -In October 1967, pilot Denny ...
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