U.S. Air Force launches Project Sign, an investigation into UFOs; renamed Project Blue Book in 1953. More than 12,600 ...
National Security Journal on MSN
Baby Blackbird: Lockheed built a Mach 3.3 drone to photograph China’s nuclear facility — all 4 missions failed and one crashed in the USSR
The Lockheed D-21 was a Mach 3.3 reconnaissance drone. Lockheed’s Skunk Works built it in the early 1960s. Its mission: ...
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