China's latest supersonic spy drone looks a lot like the Lockheed D-21 that crashed there in 1971
Lockheed developed a spy drone in the 1960s that crashed in China. China recently debuted a supersonic drone that bears a striking resemblance to Lockheed's D-21. The D-21's urgent development was marked by ambition and tragedy. China's latest supersonic spy drone looks a lot like the Lockheed D-21 that crashed there in 1971. On March 20, 1971, a specially modified US Air...
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