Sandusky, OhioSeptember 1961

On the evening of September 1, 1961, a witness in Sandusky, Ohio observed an ascending object that caught fire and burned for two to five minutes during twilight hours. The object appeared as a light roughly as bright as the planet Venus, with red and white coloring and a blinking pattern. A red or orange smoke trail or exhaust accompanied the sighting. The witness reported that the object traveled west-southwest across the sky.

The Air Force's technical investigation examined physical materials allegedly collected in connection with the sighting. Laboratory analysis revealed the materials to be man-made. The sample contained finely divided high-purity aluminum, which does not occur naturally, along with polyisobutyl methacrylate, a commercial chemical compound. The presence of bayerite (a form of aluminum oxide and water) indicated a chemical reaction of water with pure aluminum at low temperature. The investigators concluded that the sample was not from a batch of paint, as paint manufacturers would not leave such materials in their final products.

Despite the technical analysis of the physical materials, the Air Force classified this case as unidentified. The official comments noted that no evidence suggested the object was an interplanetary spacecraft or posed any threat to national security. The case file consists of 26 pages as held by the National Archives.