Project Blue Book Special Report (second copy)

This is Project Blue Book Special Report No. 14, "Analysis of Reports of Unidentified Aerial Objects," Project No. 10073, dated 5 May 1955. The study reduced about 4,000 sighting reports received by the U.S. Air Force between June 1947 and December 1952 to IBM punched cards and analyzed them statistically, including chi square tests comparing knowns with unknowns. It concludes that the reports very probably do not represent technological developments beyond present scientific knowledge, and it notes that no case produced physical evidence.

32. In the following sketch, imagine that you are at the point shown. Place an "A" on the curved line to show how
high the object was above the horizon (skyline) when you first saw it. Place a "B" on the same curved line to
show how high the object was above the horizon (skyline) when you last saw it.
33. In the following larger sketch place an "A" at the position the object was when you first saw it, and a "B" at its
position when you last saw it. Refer to smaller sketch as an example of how to complete the larger sketch.
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