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Engineering Division De os mi horandum 7p port No. NCREXD=O9i~-1SD mM ADL. Le lL. Speed. About half judged tmt the speed was less than 500 miles an hour, The other half of the judgments varied from 500 miles an hour all the way to “terrifie", “tremendous”, "inomceivable®™ and "blue blazes". ¢ 5e Background against which viewed. The great majority of observers saw the object against a clear day or night sky. 6. Time of day sighted, About twoethirds as many observations were reported at night as in the day. There are, of corse, many more opportunities for observing things during the day, The most pomlar hours were from 12 noon to 5:00 Pi, and fran 7:00 P.M. to 11:00 P.M. at nicht. Vory few (6 only) observations were made from 5:00 to 7:00 P.M, the usual hours of sunset. 5 7» Color, Observers almost universally reported seeing a light} colored object. Tsirty observers reported "white" and twenty-five said "silver". Over 70 percent described glittering, shiny, luminescent, 4 flame~like mirror-likeg or other very bright objects. Only six individuals said black or darke &~ Shape. Over half described the object as either “round”, "disoeshaped", "spherical" or "ciroular". Other descriptions were similar. Very few observers saw any distinctive shape, 9. Size. The majority of observers did not specify the objects! size. Of those who did over half said it was less than 10 feet in its largest dimension, Many compared it with a dime, a lamp, a dot, a weather ballon, a baseball, etce Interpretation of the Common Points of All Reports are tb Rien be ie A 0 The words used by observers to describe the appearances of the unidentified objects fall into a surprisingly uniform pattern, The objects were usually reported as being far away, small, bright and without a distinctive shape. They were usually seen against a clear sk y CONFIDENTIAL Declassification Authority: NND 57565