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Project Blue Book Special Report (second copy)

Internet Archive · 309 pages · text from the file's own layer

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.

18,2 Move in front ox something? (Circle Orie) Yes No Don't knot-?
IF you answered YES, then t e l l what i t moved in front of.
10.3 Blend with the background? (Circle One) Yes No Don't know
19. Which of the following objects i s about the same actual size as the object
you saw? (Circle One):
a. Pea
b. Baseball
c• Basketball
d. Bicycle wheel
e. Office desk
f. Automobile
g. Small airplane
h. Large airplane
i. Dirigible
j. Other
Circle one of the following to indicate how certain you are of your
answer to Question 19•
a. Certain
b. Fairly certain
c. Not very sure
d. Uncertain
20. Try to tell the following things about the object:
20.1 How high above the earth was it?
20.2 How far was it from you?
20.3 How fast was it going?
feet.
feet or miles.
miles per hour>
2O,ii Circle one of the following to indicate how certain you are of your
answer to the above questions:
a. Certain
b. Fairly certain
21. How did the object disappear from view?
(Circle One): a,. Suddenly
b« Gradually
c. Mot very sure
d. Just a guess
c. Other
d. Don't remember
SECTION D
22. In the following sketch, imagine your eye at the point shovn. Place an "A"
on the curved line to show how high the object was above the horizon
(skyline) when you f i r s t saw i t . Place a "B" to show x-foere i t was when
you l a s t saw i t . _ , ,
Overhead
Horizon
You
273

Cases discussed

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Report, cited by the archive. The PDF is mirrored here; the original link is under it. 309 pages are in the text index: search them above, or from the library's search.