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D-21 Drone

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By CIA - https://www.cia.gov/library/center-for-the-study-of-intelligence/csi-publications/books-and-monographs/a-12/images-and-thumbnails/ch8_2.jpg/image.jpg, Public Domain, https://commons.wikimedia.org/w/index.php?curid=9928913

The Mach 3 D-21 Drone Was a Secret America Cold War Spy Machine

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Stories From D-21 Drone

By CIA - https://www.cia.gov/library/center-for-the-study-of-intelligence/csi-publications/books-and-monographs/a-12/images-and-thumbnails/ch8_2.jpg/image.jpg, Public Domain, https://commons.wikimedia.org/w/index.php?curid=9928913

The Mach 3 D-21 Drone Was a Secret America Cold War Spy Machine

How Russia Captured This Top Secret SR-71 Style Mach 3 Drone

America Was Terrified of China's Nuclear Weapons. This Mach 3 Drone Spied on Them.

Public Domain, https://commons.wikimedia.org/w/index.php?curid=1274488

Russia Got Its Hands on This 'Mini SR-71' Mach 3 Spy Drone (To Steal Its Secrets)

D-21: This Crazy Looking Mach 3 Drone Tried to Spy on China's Nuclear Bomb Tests

How Russia Got Its Hands on a 'Mini SR-71' Mach 3 Spy Drone (And Stole Its Secrets)

Check Out the D-21: A Mach 3 Drone the U.S. Used to Spy on China's Nuclear Weapons

What a Secret: The U.S. Used Super Fast Mach 3 Drones to Spy on China's Nuclear Weapons