PROJECT BLUE BOOK

UNIDENTIFIED FLYING OBJECT CASE FILES · 1947 – 1969

CASE REFERENCE9669554

DATE OF SIGHTINGOctober 1947

REPORTED LOCATIONLas Vegas Nevada

FRAMES4

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Machine transcription · mean legibility 52.5/100 · engines: tesseract-200dpi

Transcribed Frames

FRAME 001 / 004POOR LEGIBILITY — PENDING RE-EXAMINATION

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FRAME 002 / 004POOR LEGIBILITY — PENDING RE-EXAMINATION

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FRAME 003 / 004tesseract-200dpi

At F464

. Incident No. 7i — 8 or October 19,7, daytime, Las Veras, Nevada.
S| J 2
@ An Air Force Reserve pilot reported observing a trail appearing high in

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the sky at an estimated speed of 4OO-1000 LPH. he object producing the
trail was not visible. The trail was white as a cloud, and dissi pated in
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fifteen to twenty minutes. ihe opject proceeded in a straight Line, then
4% made an approxinately 160° turn of radius five to fifteen miles, and

proceeded ayay toward the direction of first appearance. ‘The reather was
described as "almost cloudless.”

8

ALM® Opinion: It is difficult to understand why. this individual attached
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any importance to this aor te ot and way he did not conclude that tie ‘trad
was caused by exactly what it appears to have been; that is, an ordinary alr-
craft ‘lying normally at an altitude too hiyh for itself to be visible, but
in the best altitude range to form vapor trails 20,000 ~ 45,000 fest,

FRAME 004 / 004tesseract-200dpi

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VOVAS, MSEVAaACAR —_ 8 Oy’ 9 \ C tober yf 147

4ncident #71 -- “as r
(Supgroedes interix report of 2/1/49)

In evorytaing except tre course flewn, tne description

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given here answers to that of a fireball. The courss in

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tnis incident, however, apovears al:wost futal to such a ny votnesis.
‘ig {L 3901) on record, to this i:.vesti ‘autor Ss ecneviec:9, has been
known to turn back on itself. wvaytime rirevulls nuve th OUSGrved,
however, that were invisible save for a marked white cloudlike
trail.

Yost fireballs pursue wssentially straivsht courses, and,
in tact, apparent deviations are often caused by illusions of
pyrspyctive and of & spherical sky. sen] deviations are caused by

9 aifocts of the moet yor’s enoounter with the atmosohere. lo eryseutoe
nm curved trajoctory would require ni hAly extraordinary circurnstances
indeed, and a meteoric explanation for tnis ino! mist o@ re,-ardced

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as moss improcavola.,.

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It is more likel, that some scrt of aircraft was Tal

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ovservation,.