Project Grudge (1 Feb 1949 Jahr – 1 Dez 1949 Jahr)

Beschreibung:

Project Grudge was a short-lived project by the U.S. Air Force (USAF) to investigate unidentified flying objects (UFOs). Grudge succeeded Project Sign in February, 1949, and was then followed by Project Blue Book. The project formally ended in December 1949, but continued in a minimal capacity until late 1999.

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