Declassified UFO / UAP Document
UFOB Index Card — Clear Lake, South Dakota, November 1956
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AI-Generated Summary
A civilian reported a red-to-green, egg-shaped object in Clear Lake, South Dakota, in November 1956. The object was observed for 90 minutes with binoculars, exhibiting rapid, erratic movement.
This document is a UFOB Index Card (reference number ATSS-UFOB-177-56) detailing a sighting that occurred between November 27 and November 29, 1956, in Clear Lake, South Dakota. The report describes a single, egg-shaped object that appeared red to green in color. The witness estimated the object's size to be equivalent to a grapefruit held at arm's length. The object was first observed at an elevation of 30 degrees and an azimuth of 270 degrees. According to the report, the object moved rapidly and erratically with no set pattern. The total duration of the observation was one and one-half hours, during which the witness used binoculars to track the object. The report indicates that the source was civilian and that no photographic evidence was obtained. No radar contact was reported. The document notes that ATIC Form 164 was sent to the source on November 29, 1956, to gather further information, and that the results of that analysis would be included in a future Monthly UFOB Summary.
One red to green egg-shaped object, the size of a grapefruit at arm's length. Object was first seen at 30 degrees elevation, 270 degrees azimuth. Object changed directions fast—no set pattern.
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Official Assessment
The object was observed visually and through binoculars for one and one half hours. It was described as red to green, egg-shaped, and roughly the size of a grapefruit at arm's length. It exhibited rapid, erratic movement.