🇺🇸 USAF — Project Blue Book
In September 1956, a witness in Hanover, Kansas, observed a round silver object the size of a grapefruit at arm's length for 35 minutes. The observation was made from the ground and was visual, without radar or photographs. Despite the long duration of the sighting, no detailed report was filed. Due to the lack of additional information, investigators concluded there was insufficient data to evaluate the case. The nature of the object remains a mystery.