FBI file 62-HQ-83894, serial 164

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c. Odor (if any).
d. Rate of evaporation.
e. Does trail vary with sound? (spurts)
12. Effect on clouds.
a. Opened path thru clouds .
b. Forced cloud or mists.
c. Reflected on cloud.
d. Showed thru cloud.
13. Lights.
a . Reflected or attached.
b. Luminous
c . Blinked on and off in r elation to speed.
14. Support
a. Wings.
b. Aerodynamic list of fuselage.
c . Vertical jet.
d. Rotating cylinder or cone.
e . Aerostatic lift (balloon or dirigible).
15. Propulsion.
a . Propeller or jet.
b. Rotor.
c . Aerodynamic vanes (flapping or oscillating) (Katz Mayer effect).
d. Visible exhaust or jet openings.
16. Control and stability.
a . Fins
b. Stabilizers (hor izontal or vertical).
(1) Size.
(2) Shape.
(3) Location.
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