U.S. Air Force Analysis of Flying Objects in the United States, 1-100
DOW-UAP-D087 · page 51 of 253
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CHECK-LIST - UNIDENTIFIED FLYING OBJECTS Incident # 21 1. Date 29 June 47 2. Time 1615 3. Location Du Moine, Iowa 4. Name of observer Dale Bay 5. Occupation of observer Member of U.S. Stories Magazine 6. Address of observer 101, Crocker, No. 7. Place of observation Not stated 8. Number of objects at first 5, then 13 9. Distance of object from observer Not stated 10. Time in sight Not stated 11. Altitude 1200 ft. 12. Speed 300 mph 13. Direction of flight NW 14. Tactics single file 15. Sound like an electric motor or dynamo 16. Size about 12 ft. thick & 175 to 250 ft. in diameter 17. Color Dirty white 18. Shape Between circle and oval - inverted saucer 19. Odor detected Not stated 20. Apparent construction Not stated 21. Exhaust trails Not stated 22. Weather conditions Not stated 23. Effect on clouds Not stated 24. Sketches or photographs None 25. Manner of disappearance Not stated 26. Remarks: None