Project Bluebook
Project Blue Book was a long-running U.S. Air Force program (1952–1969) head quartered at Wright-Patterson Air Force Base, Ohio, tasked with systematically investigating and analysing reports of Unidentified Flying Objects (UFOs). It aimed to determine if UFOs posed a national security threat and to analyse data scientifically. Out of 12,618 cases, 701 remained "unidentified".