U.S. Air Force Technical Information Sheet — Sighting Report, Fremont, Wisconsin, July 3, 1953

This document comprises a U.S. Air Force sighting report regarding an incident on July 3, 1953, at Partridge Lake, near Fremont, Wisconsin. The primary witness, an immunologist from Morton, Illinois, reported observing two luminous, circular objects while fishing with a companion. The witness described the objects as hovering near the sun for approximately 45 minutes before moving steadily in a southeasterly direction. The witness noted that the objects appeared to be of different diameters, with the smaller one occasionally appearing to touch the larger one. The witness further described the objects as having a polished, metallic, or silvery appearance, and noted that just prior to their sudden disappearance, a white, vapor-like vertical column appeared below them. The witness explicitly stated that the objects made no sound and that their movement was contrary to the wind. The report includes detailed sketches and questionnaires completed by the witness, who expressed that the event was the strangest thing they had ever seen in the sky. The documentation was forwarded by the 520th Air Defense Group at Truax Field to the Air Technical Intelligence Center at Wright-Patterson Air Force Base. The official conclusion recorded on the report identifies the objects as a weather balloon, specifically a 'Pitell balloon' launched from Milwaukee, Wisconsin, at 1500Z.