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Lockheed D-21: America’s Fastest Drone from the Cold War
Lockheed launched one of the most ambitious secret projects in aviation history: the D-21 drone. Designed to fly faster than ...
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Lockheed’s D-21: This Mach 3 Drone Was a Cold War Ghost
The Lockheed D-21 wasn’t just fast—it was untouchable ... that Republican candidate John Reid addresses photos: 'I'm mad as hell' Hubble Telescope captures cosmic collision from 50 million ...