15 20Mi Wof Jolliet unidentified aerial event — November 26, 1957

On or during November 26, 1957, at or near 15 20Mi Wof Jolliet, Illinois, United States, the source reports the following sequence: BRIEF SUMMARY OF SIGHTING An ANG pilot, now an ANG Gape pilot, while flying an F-86A at 40,000 ft saw a white flash or glow on his left wing at a range of 1/4 mile. The flash was observed for 30 minutes and eventually disappeared. Where were you located when you saw the object? a. Flying near an airfield? e. Flying at sea? f. Flying over open country? g. What were you doing at the time you saw the object, and how did you happen to notice it? What direction were you looking when you first saw the object? (Circle One) North, Northeast, East, Southeast, South, Southwest, West, Northwest 30. What direction were you looking when you last saw the object? (Circle One) North, Northeast, East, Southeast, South, Southwest, West, Northwest 31. 31.2 When it disappeared: From true North 025 degrees, From horizon 15 degrees. Place an "A" on the curved line to show how high the object was above the horizon (skyline) when you first saw it. Place a "B" on the same curved line to show how high the object was above the horizon (skyline) when you last saw it.