🇺🇸 USAF — Project Blue Book
In October 1967, a witness in Denver, Colorado, reported a triangular object glowing in reddish-orange and slightly fluorescent tones. Described as the size of a baseball, it remained visible for about 12 seconds. Initially considered a possible hot-air balloon, the detailed description hints at something more unusual. The observer saw it with the naked eye, with no sounds or physical evidence recorded.