Milwaukee, WisconsinNovember 1951

On November 26, 1951, two experienced Capitol Airlines pilots reported seeing an unusual, fast-moving object near Milwaukee, Wisconsin. The first pilot, flying a DC-3 at 5,000 feet about 25 miles east of Milwaukee, watched the object approach him head-on for roughly ten seconds. He described it as a "ball of fire" with an orange glow and a blue exhaust-like tail stretching about 200 feet behind it, with a gap of roughly 150 feet between the ball and the tail. The object passed slightly to his right and above his aircraft at what he believed was extremely high speed, traveling on a level flight path with no sound. The weather at his altitude was clear with unlimited visibility.

About the same time, a second Capitol Airlines pilot flying about 75 miles to the south reported seeing a bright blue exhaust-like light heading due east. This pilot estimated the object's speed at around 2,000 miles per hour, though he noted it seemed slower than a meteor or comet. He described it as long with a tapered tail "like an ice cream cone on its side" and watched it for about 35 seconds before it disappeared over the eastern horizon. He did not see the orange ball that the first pilot observed, only the blue tail portion.

The Air Force investigated the sighting thoroughly. The University of Michigan Observatory at Ann Arbor reported no observations due to cloud cover. The 30th Air Division radar station near Elkhorn, Wisconsin recorded no electronic contacts. A check of military flight service records found no known jet aircraft active in the area at the time. Both pilots were experienced and credible: the first had flown B-17s during World War II, and the second had six years with Capitol Airlines and previous Air Force service. The officers who interviewed them found both men sincere and well-oriented in their accounts.

The case file indicates the two sightings were believed to be the same object based on the timing, descriptions, positions, and direction of flight, though the OCR makes some passages difficult to read with certainty. The Air Force's formal evaluation on the record card lists the conclusion as "unknown." The full case file is reproduced below as held by the National Archives, spanning 7 pages.