🇺🇸 USAF — Project Blue Book
In April 1952, an Air Force officer in Ohio observed a bright, elongated aerial object. The object was moving in a straight line at high speed, without making noise or leaving a trail. Although it was seen for 15 to 30 seconds, its nature could not be determined with certainty. Several possibilities were considered, including a balloon or an astronomical phenomenon, but there were not enough data for a conclusive evaluation. An officer's additional testimony reinforced the description, noting that the object did not change shape or size during its flight.