An FBI Vault entry describes Project Blue Book (UFO) and guides users through sections such as About the Vault, Browse Files, A-Z Index, Proactive Disclosures, and FOIA, including options to check FOI/PA request status and explanations of exem… #aliens #dc #fbi #may2026 #ovni #uap #ufo #ufosky #usa https://vault.fbi.gov/Project%20Blue%20Book%20(UFO)%20