FBI file 62-HQ-83894, serial 164

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17. Air ducts.
a. Slots.
b. Duct openings.
18. Speed - M.P.H.
19. Sound.
a. Continuous whine or buzz.
b. Roar, whistle, whoosh.
c. Intermittent.
20. Manner of disappearance.
a. Explode.
(1) Possibility of fragments.
(2) Other physical evidence.
b. Faded from view.
c. Disappeared behind obstacle.
Relative to the Observer
1. Name of observer.
2. Address.
3 . Occupation.
4. Place of business.
a. Employer or employee.
5. Pertinent hobbies.
a. Is observer amateur astronomer, pilot, engineer, etc.
b. Length of time engaged in hobby (experience).
6. AbUity to determine:
a. Color .
b. Speed of moving objects.
c . Size at distance.
7 . Reliability of observer.
a. Sources.
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