UFO observed by two pilots over Minnesota

Summary

In April 1965, two U.S. Air Force pilots reported seeing a round, white object that resembled a basketball. The incident occurred above Minnesota, specifically near Duluth, and lasted about 30 minutes. The pilots, flying F-89s, attempted to reach the object's altitude, estimated at around 40,000 feet, but were unable to do so. Although no photographs were taken and no physical evidence was found, both observers agreed the object looked like a balloon.

The official conclusion was that it was a balloon, and no conflicting data challenged this analysis. During the same period, weather stations in St. Cloud and Minneapolis had released balloons, supporting this explanation. Despite maintaining surveillance, the pilots could not get close enough for further details. This case, like many from the era, was categorized as a common phenomenon, but remains an interesting example of how military UFO sightings were documented.