🇺🇸 USAF — Project Blue Book
In October 1966, a civilian in Waterloo, Iowa, observed three unidentified triangular objects for four hours. The objects displayed red, green, and white colors and moved erratically. One of them stopped, changed to a flickering red color, and remained stationary. Despite the long observation, authorities concluded that the data was insufficient for a definitive evaluation.
The report mentions that in the same area and time, small aircraft were reported, including one with an engine fire that made an emergency landing. The observers admitted that what they saw could have been explained by these aircraft, although they could not confirm it. The case remains unresolved, with no conclusive evidence.