U.S. Air Force Analysis of Flying Objects in the United States, 1-100

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CHECK-LIST - UNIDENTIFIED FLYING OBJECTS

Incident # 31

1. Date Mid-December 1946

2. Time Early morning

3. Location Northern Arizona, Route 66

4. None of observer K. D. Wood

5. Occupation of observer Professor and Head Aeronautical Engineering

6. Address of observer University of Colorado, Boulder, Colorado

7. Place of observation In flight on a trip through the southwest

8. Number of objects 1

9. Distance of object from observer Not stated

10. Time in sight Not stated

11. Altitude 20,000 feet to 50,000 feet

12. Speed 600 mph, ± 200

13. Direction of flight First vertical then West to East overhead

14. Tactics No maneuvers

15. Sound None

16. Size Not stated

17. Color White - Did not see object

18. Shape Not stated - did not see object

19. Odor detected Not Stated

20. Apparent construction Not stated - did not see object

21. Exhaust trails White, heavy

22. Weather conditions Clear

23. Effect on clouds Not stated

24. Sketches or photographs None

25. Manner of disappearance Not stated

26. Remarks: Saw only vapor trail, like rocket or jet exhaust. Not like usual jet airplane trail.