National Security Journal on MSN
The Mach 3 SR-71 Blackbird Spy Plane ‘Broke All the Rules’ Thanks to Titanium
In one of the greatest ironies of the Cold War, the U.S. had to secretly buy the titanium needed to build the Mach 3+ SR-71 Blackbird spy plane from its primary adversary, the Soviet Union. Lockheed’s ...
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