🇺🇸 USAF — Project Blue Book
In October 1951, an observer in St. Croix Falls, Wisconsin, reported a high-speed unidentified flying object moving at great altitude. The object, seen for two minutes, performed unusual maneuvers such as a rapid dive followed by a sharp climb of 50 to 60 degrees toward the southeast. According to the report, the object left no vapor trail and its behavior did not match that of balloons, aircraft, or stars. An expert balloonist, J.C. Kaliszewski, confirmed that the object was not conventional and called for further investigation.
Kaliszewski's testimony, along with that of another expert, Charles B. Moore, emphasized the need for a more rigorous analysis of these phenomena. Both, employed by General Mills on balloon-related projects, stated that they had observed similar objects multiple times. Their statements, published in a news article, highlighted the impossibility of identifying the objects with certainty and suggested that the government should take more serious measures to study these events. Despite their calls, it is not mentioned whether authorities acted on their recommendations.