Antigo&Madison Wisc radar-visual unidentified-object report — April 1959

On or during April 1959, at or near Antigo&Madison Wisc, the source reports the following sequence: BRIEF SUMMARY OF SIGHTING Object sighted on Radar as it left Madison area, went out over lake, made 180 degree turn and came back, maintaining equidistant between the two Radar Stations. This sighting was compared to previous sightings made with Radar and was found to be correlating with their observed characteristics. WE TRACKED ONE. (2) 190 DEGREE, 35,000 FEET (3) WHEN PILOT RETURNED TO BASE OBJECTS WERE STILL IN AREA. INTERCEPTOR WAS AT 45,000 FEET, OBJECTS WERE REPORTED TO BE HIGH. (4) ERRATIC PATH. HIGHLY MANEUVERABLE, SEEMINGLY PICKING UP TO VERY HIGH SPEEDS. (5) FADED (6) TWO HOURS (APPOX) WE TRACKED ONE (2) 190 DEGREES, 35,000 FEET (3) WHEN PILOT RETURNED TO BASE OBJECTS WERE STILL IN AREA. INTERCEPTION WAS AT 44,000 FEET, OBJECTS WERE REPORTED TO BE HIGH. (4) ERRATIC PATH, HIGHLY MANEUVERABLE, SEEMINGLY PICKING UP TO VERY HIGH SPEED. (5) FADED (6) TWO HOURS (APPROX) C. (1) GROUND-ELECTRONIC, RADAR WAS AN/FPS-20 (2) RADAR AND REFERENCE POINTS (3) NOT APPLICABLE D. (1) 14 APR 23 AT 0132Z (2) NIGHT E.