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Published on Dec 21, 2012
This next part in our new series, "Your Need to Know", we cover Project Blue Book. Blue Book was the result of two previous Air Force study projects, Sign and Grudge, in the late forties and lasted until early 1970. It's purpose was to determine if UFOs were a threat to national security, and to scientifically analyze UFO-related data. The project went through many changes, but there can be little doubt that it played a pivotal role in the official history of UFOs in the USA.