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D-21 Mach 3 Spy Drone Summed Up in 4 Words

Key Points and Summary on the D-21 Drone – The Lockheed D-21 was a Mach 3.3, high-altitude reconnaissance drone developed by Skunk Works in the 1960s—a revolutionary concept that was ultimately too far ahead of its time. Launched from the back of an A-12 Oxcart or a B-52 bomber, this ramjet-powered spy drone was designed to photograph sensitive sites, like China’s Lop Nor nuclear test facility, and eject a film canister for recovery. However, th…
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nationalsecurityjournal.org broke the news in on Friday, July 18, 2025.
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