Summary
Project Blue Book compiled thousands of sightings into Special Report No. 14, applying statistical methods to categorize cases. Analysts found a significant percentage remained unexplained after evaluation.1
The study emphasized improved data collection but argued sightings offered no evidence of hostile intent or advanced technology.2
References
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Air Technical Intelligence Center, "Project Blue Book Special Report No. 14: Analysis of Reports of Unidentified Aerial Objects," Project No. 10073, 5 May 1955, CIA Reading Room release mirrored by The Black Vault, summary pp. vii-viii and introduction pp. 1-2. ↩
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Air Technical Intelligence Center, "Project Blue Book Special Report No. 14: Analysis of Reports of Unidentified Aerial Objects," Project No. 10073, 5 May 1955, CIA Reading Room release mirrored by The Black Vault, summary pp. vii-ix and conclusions p. 94. ↩