Exerpts from the US Air Force textbook 'Introductory Space Science'
"33.1 Descriptions
One of the greatest problems you encounter when attempting to catalog UFO sightings, is selection of a system for cataloging. No effective system has yet been devised, although a number of different systems have been proposed. The net result is that almost all UFO data are either treated in the form of individual cases, or in the form of inadequate classification systems. However, these systems do tend to have some common factors, and a collection of these factors is as follows:
a Size
b Shape (disc, elipse, football, etc)
c Luminosity
d Color
e Number of UFOs
BEHAVIOR
a Location (altitude, direction, etc)
b Patterns of paths (straight line, climbing, zig-zagging, etc)
c Flight characteristics (wobbling, fluttering, etc)
d Periodicity of sightings
e Time duration
f Curiosity or inquisitiveness
g Avoidance
h Hostility
ASSOCIATED EFFECTS
a Electro-Magnetic (compass, radio, ignition systems, etc)
b Radiation (burns, induced radioactivity, etc)
c Ground disturbance (dust stirred up, leaves moved, standing wave peaks of surface of water, etc)
d Sound (none, hissing, humming, roaring, thunderclaps, etc)
f Smell (ozone or other odor)
g Flame (how much, where, when, color)
h Smoke or cloud (amount, color, persistence)
i Debris (type, amount, color, persistence)
j Inhibition of voluntary movement by observers
k Sightings of 'creatures' or 'beings'
AFTER EFFECTS
a burned areas or animals
b Depressed or flattened areas
c Dead or 'missing' animals
d Mentally diturbed people
e Missing items
We make no attempt here to present available data in terms of the foregoing descriptors."
To Be Continued......
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