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How many U-2 spy planes were built?
The Lockheed U-2 'Dragon Lady' spy plane is famously one of the oldest aircraft types in service with theUnited States Air ...
The National Interest on MSN
Why the U-2 Dragon Lady Spy Plane Is an Astonishing Feat of Engineering
The U-2’s ability to reach 70,000 feet—an altitude that most modern fighter jets cannot match—came about after a series of remarkable design innovations.
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