🇺🇸 USAF — Project Blue Book
In July 1954, a witness in Rivera, California, saw two objects moving like stars. Without making any noise, they climbed steadily and executed a maneuver in formation. One was slightly ahead of the other, then they flew side by side. The sighting included no photographs, but it was noted that two F-86 jets were in the area at the same time. Exact weather data and the time of the event were recorded, but no clear explanation was given.
The lack of sound and the controlled behavior of the phenomenon raised questions. Although weather balloons and aircraft were considered, the official conclusion was "insufficient data for evaluation." The case remains unsolved, like many from that era.