Air Intelligence Information Report: Sighting over Lake Kishkonoug, Wisconsin

This document is an Air Intelligence Information Report (Report No. 4706 DW-3-52) dated July 15, 1952, concerning a sighting of an unidentified aerial object over Lake Kishkonoug, Wisconsin, on June 28, 1952. The report details an observation made by a civilian witness at approximately 1800 CDST. The witness, who was located on the north shore of the lake, reported seeing a silver-white spherical object that appeared to be about half the wingspan of a jet fighter. The object was observed at an altitude significantly higher than a jet fighter estimated at 6000 feet. The object was initially on a southwest heading, consistent with a jet aircraft in the area, but then performed a 180-degree turn, during which it appeared to change shape into an ellipse before returning to a spherical form and heading northeast. The witness estimated the object's speed to be five times that of the jet aircraft. The report notes that there was no sound associated with the object, nor was there any visible exhaust or contrail. The weather at the time was clear with bright sun and 15-mile visibility, making temperature inversion unlikely. The investigating officer, Captain Neil M. MacLachlan of the 4706th Defense Wing, concluded that no known activity could account for the object's change in appearance or its high speed relative to the jet aircraft. The report confirms that no physical evidence or photographs were obtained and that no interception was taken. Local aircraft, including F-86s, were flying from Truax AFB at the time of the incident.