🇺🇸 USAF — Project Blue Book
In August 1956, an object was detected by radar in North Bend, Oregon, for two hours. No visual description of the object was provided, as it was observed only by radar equipment. The object appeared at 54,000 feet altitude and moved eastward, gradually descending to 50,000 feet. Its trajectory and behavior suggested a balloon, although wind patterns at that altitude did not fully align with its movement.
The official conclusion was that it was likely a balloon, supported by confirmation from a radar station that a balloon was present in the area at the same time. Despite doubts about wind correlation, the report classified the event as probably caused by a balloon. This case exemplifies how limited data and atmospheric conditions can complicate the identification of unidentified objects.