🇺🇸 USAF — Project Blue Book
A UFO case recorded in 1963 in St Clair County, Michigan, describes an object observed for 45 minutes by a local sheriff. The report, submitted by a congressman, mentions the object maneuvering during the early morning hours. Although no photos were taken, multiple witnesses later reported a halo-like phenomenon. The official evaluation suggested it could be a helicopter, though no specific one was identified. Circumstantial evidence supported this hypothesis, and further investigation was deemed unnecessary.
The Air Force concluded there was insufficient data for a definitive evaluation, but noted that the primary testimony and reports from other witnesses indicated a possible conventional explanation. The case was archived without a conclusive resolution, though it could be revisited if new leads emerged.