PROJECT BLUE BOOK

LL Tc

1. DATE - TIME GROUP 2 LC TION

!
;
o . - ‘ fo ye ‘> . Ss . Md . .
10 Jan 53 LO/ 52 OPO Got LLfoernia

3. SOURCE 10. CONCLUSION

Heati rr Colon] UND DN oT ed

4. NUMBER OF OBJECTS
Ore Unia@arki A ed

5. LENGTH OF OBSERVATION 1]. BRIEF SUMMARY AND ANALYSIS

00 = 75 Sec. Silvery colored object travelel at estimated spped of & 3

-_ ion. see An tet oh _ wtte 4 2% {Oo a a re
6. TYPE OF COSERVATION wine Pec OL JgOu aCe Voice. rmeae 4 0 bur1s and several

90 tums, thm r yorbtie.l) uv] adisanpeared,

frournl=Viswal.

7. COURSE

, ~ rr .
L veh, if

3 PHOTOS

0 Yos
~ No

9. PHYSICAL EVIDENCE

O Yes
eZ No

FORM
FTO sep 63 0-329 (TDE) Previous editions of this form may be used,

anal aids

PACE TWO

JUPML AUSLA

ANDISAPPEARED FR VIEW. TRAIL OR NEGse PROFULSIONS SYS?

Be AUS T3

ROS!

oe

NEG. DISAPPEARANCE S VERTICALLY AND DISAPPEARED FR

verre ——

-
et *

SETWEEN 2545 AND 16¢¢ PST-2545 AND 24022

a il =.

1m JAN SSe

OSSERVATICN 69 TO 75 SECONDS.

4S/ VI:
Git

CALIF IN SONOMA VALLEY. OBJ SIGHTED 45 DEGRELS NY Ch

ALT. /5/ 1 OBSR

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ee | wl

RETD COL W/ 202 HRE A LIENCEs. 1 EMPL FSA,

A Th
Ast

S.Fe, CALIF. /6/ WEA HANILTON AND SONOMA; CLEAR, VISIBILITY 12

Wis FR E AT 7 KNOTS. /7/ NEG. /3/ NEG. /9/ NEG. /12/ NO

OTHER ALP
TiaFFIC IN AREA AT TINE OF SIGHTING, END

25/210%Z JAN JUPML

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AF FOPM 112—PART I

APPROVED | JUNE 1948

Soran Cc slilm f

WA ONCLASS IF:

COUNTRY \\) 7%: REPORT NO, (LEAVE BLANA)
Uaited States . £R-1-5 54 Aaa ool tT Ba
AIR INTELLIGENCE INFORMATION REPORT
somecr : saree a. tee
_.. vad. a jieiceniinintaacesinipnainiitieesia we
AREA REPORTED ON FROM (Agency)

Dirsctor of fnvelliszense, iq, WaAb?
- 7 =U Thi Lh. or j , 4 . oe. c.f | =
pate or or REPORT DATE OF INFORMATION a , athe sabes aa

21 on 2 - j 5 ef au Moy Os A = — — —————
- dePAREO DY tiles 3 Lo ad 2
os, ti i? be | | USAs C f
‘al aie ee ee as hee Laineaineeettens

W iMMARY: (Enter concise remmary of report, Give significance in final one-sentence puragraph, Ltat inclowsres at lower left. Begin tert of report on AF Form 112—Part 1)

SUBJZCT: #LYOBRPT

+ ee

Ia ascordance with ATL 200-5, dated 29 Aoril 1952, subject: Unidentirisd
Flylag Oojects Reporting (Short Title: PLYO3RPT), the following report of an
unidentified flying object is submitted:

Oa 10 January 19535, between 1545 hours and 1600 hours, Pst (25452 uad 24002),
Coloael Pine erent (Reb) and Lir. Tete of the Federal Security
\j;¢acy, San Francisco, California, obsarved an unidentified flying object while
ei cat (8) alles northwest of Sonoma, California, from a knoll in the hills north-
wost of the Sonoma Valloye. The objoot was sighted at a 45° angle northwest fron
tae locaSion of che cbservers at a very high altitude, so high that the object
weds Compared to the flat head of a pin held two feet from the Oy8.s Soved was
ostiuated at four times the speed of a jot alrocraft with accompanying sound clallur
to the USay 7-386 jet asS high altitude, . here was no changes in sound tone or
ae F yoepe maneuvers. Unusual maneuvers made by the object were; (1) - Three
) Ss Sight turns to the right, taking 2 to 5 secunds to complete each turn;

) - Ta (2) right angle (90°) turns, first to the right, then to the left; (5)
The ebjeet slowed dowa to alnost a complete stop, then accelerated to high
speed again, making this maneuver twice, the object shen rose vertically and
disaopedred from view, Total tins of observation was osSimaSed to be between 50
aad 75 seconds. There wars no radar contacts with this cbject. No other obser=
vasions of this objeot are known to have been made,

(
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APPROVSD : /\ * ~~ |

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J M CR AAALYY at ALP AM NA Af
MARY s¥ Cc . BRO Pe | J R

L% Coloney,,; USAF
Direstor of Intellizsace

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tape Recording on Resl “Go. fo ye de
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Tape SOR lentes are
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™ _ = ~~ - - LT LT LT TT wii XZ _—————_———o —
OISTRISUTION BY ORtGiINATOR

CG, Air Defense Command, tnt AS, Colorado Springs, Colorado

VNCLASSI

Th ad

MOTE THIG DOCUMENT CONTAINS INFOR MATION AFFECTING THE NATIONAL DEFENSE OF THE UNITED STATES WITHIN THE MEANING OF THE ESPIONAGE ACT, 90 U.S C

31 AND (2, SS AMENDED. ITS TRANSMISSION OR THE REVELATION OF ITS CONTENTS IN ANY MANNER TO AN UNAUTHORIZED PERSON 1S PROHISITED KY LAW,

ty MAY NOT ME REPRODUCED IN WHOLE OR IN PART, GY OTHER THAN UNITED STATES AIR FORCE AGENCIES, EXCEPT BY PERMISSION OF THE DIRECTOR OF

INT ELLIGE NCE, USAF.

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AF FORM 112—PART II x

APPROVED 1 JUNE 1948

UNCLA SSIFIEZI
AIR INTELLIGENCE INFORMATION REPORT

TROM |. lure

‘a, wiDe, Hamilton Ar3

laailtoa, Cali?

Oe os = ee ee ee |

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vn 15 January 1953 at 1235 hours PST (19552), cnw Colonel i :, |
USal, (Retired), aopeared and was interrogated in the Office of the Director of
Intelligence, iiwnilton Air Force Dasa, Hanilton, California, stating he had

observed an unidentified flying object. A tape recording of Ghis ‘nterrovation a
was made aad is Lorwarded with this resort us inclosurs 7l. Intornascion cone
tained therein is as follows:

Nane mad Address of Observers:

_ _1) Volonel USAF (Ret)

Suvsem, California

(:)
Pederal security gency
Saa vrancisco, California

interrogated by 3

Captaia uo. le Johnson, Usl

Publie Information Orrica

Leagguarters ,estern Air Defense rorce
Hwallton Air Force Base, Hamilton, California

le Descriosioa of Goject:

Shape: Unknown dus to high altitude.

Size: About the size of a pin-head heid 2 fast from
the OY 3.

Color: Silvery, possibly due to reflection of sun

agalust alreralS-typs covering.

Speed: Great speed. Ustimated as 4 times the speed
of a jat aircraft

Sound: Similar to sound of oa /-35 at alga altituda,
wita no changes in Gone or volume during mane
CUTerSe

llaneuvers: The object made three (5), 550° turns to the

richt taxing 2 to 3 seconds to complete each
turn. These turns wers made ab SD second ine
tervals still holdings on the same course. [6
continued on and made aa abrupt ricsht unzle
(90°) turn to the rizht, followed 5 seconds
Jater with an abrupt turn to the left whiscna

DOWNGRADED AT 9° youn rm placed the object back on its original course.
DECLASSIPY ry A an eee INTERVALS; After tails maneuver, wae object slowed down
DOD DIR 5200.10 SAitS, to almost & Stoo and then accelerated to its
, previous speed, maxing this maneuver twice,

The objeot then rose vertically and disao-
peared from view. (The observer stated that
the object could possibly have bean climbing

7 ~*~
kad | ; : CT»

NOTE: THIS DOCUMENT CONTAINS INFORMATION AFFECTING THE NATIONAL DEFENSE OF THE UNITED STATES WITHIN THE MEANING OF THE CSPIONAGE ACT, SOU SC

Sh

31 AND @ AS AMENDED ITS TRANSMISSION OR THE HEVELATION OF ITS CONTENTS IN ANY MANNER TO AN UNAUTHORIZED PERSON 15 PROHIBITED BY LAW.

IT MAY NOT BE REPRODUCED IN WHOLE OR IN PART, BY OTHER THAN UNITED STATES AlA FORCE AGENCIES, EXCEPT BY PERMISSION OF THE DIRECTOR OF
Pe TELLiGenCé, HISAP - . - ~.

4 omer i4- 44/04 “ U & OCOwleNwent PRINTING COPE leo Oren?

AF FORM 112—PART Il

eacen sen we ~~ isencrod —NICLASSIFIED
AIR INTELLIGENCE INFORMATION REPORT
FROM (.igency) PEMORT NO,
tig, MAD, Bwallton Ar3
.Haailten,._cali£—__—_.__.__ RES eS ee a

whom it seemed to slow down to a stop bub shat le

‘rlously doubted it). The 360° turns were said
+ be very tight turns, sboutb cns-eishth (1/Jth)
cf area reaguiresd for jot aircraft,

Tralls or Uxhauat: None observed.
wropulsion system: Not rovorted.
Wuader of Ob jacts: One (1)

Anger of Disappearance; Object ress vertically and disaspeared from view
to Ghe northwest,

Other Pertinens or The glinting did not chaugs during the maacuvers,
Unusual reabturos:s

2. Tine of Sirhbinz:
Local Time: DeSween 1545 hrs and 1600 hrs, 10 Jan 63
Zebra Times DeSween 25452 and 24002, 10 Jan 55

Length of Time Coserved: from 69 to 75 seconds by Colonel MR ur
saw oDjoot 10 seconds later whan Colonel
pointed it cut to hin, due to the objects

terrifvio speed and hish altitude.

S- Sanner of Observation: Visual without aids. The 28th Air Division (Defonan)
rovorted no radar conSacts with this object during
the tine and date reported.

4, Location of Cbservers During Sishting:

Eigats (8) miles northwest of Sonoma, California, from a knoll in the hills
norsthwess of Sonoma Valley near the crest of Trinity Aoad connecscing the Jonoma
aad hapa Valleys. The object was sighted at a 45° angle nortawest of position
of the observers. Distance of object from observers was undetermined, rlyiaz
at a very high altitude in a northwest direction. Altitude was deterained to bs
greater than that normally flown by jot aircraite

5. Roeliansility of Informations

Colonel Sed hs te w total of owr 1,000 hours flying time and is
fanaillar with various types of alrcraft, However, ho stated thut Lr. Hunter's
backsround dows nob indicate much faniliarity with atreraft.

6. ‘eather, sinds and Visibility at Tine and Place of Sichtinzs

Cosgervers Kevorts The sun was dropoing in the west. Visibility was good,
colling was unlimited with sufficient lisns for good observatioca.

DOWNGRADED AT 3 YRAR TERY ATS

DECLASSIFIED AFTER }9 YEARS

-

LOD pix 5200.10
TINCrASSIFIED

NOTE: THIS DOCUMENT CONTAINS INFORMATION AFFECTING THE NATIONAL DEFENSE OF THE UNITED STATES WITHIN THE MEANING OF THE ESPIONAGE ACT, 59 U.S.C ~
41 AND @. AGAMENDED, ITS TRANSMISSION OR THE REVELATION OF ITS CONTENTS IN ANY MANNER TO AN UNAUTHORIZED PERSON IS PROHIBITED BY LAW.
IT MAY NOT BE REPRODUCED IN WHOLE OR IN PART, UY OTHER THAN UNITED STATES AIR FORCE AGENCIES, EXCEPT KY PERMISSION OF THE DIRECTOR OF
INTELLIGENCE, USAF,

oid SStFICATION) =r 3% 555701 a ©. ©. covevcernt rererice wre

AF FORM 112—PART HI a LF SUAS

is ‘
A PROVED 1 JUNE 1648

; 4 ‘aysery : _— . ™
RINCT | + " ]

AIR INTELLIGENCE INFORMATION REPORT

PROM (.lyeney) REPORT NO,

1g, sADM, lianiltoa Arg

+ vailltoa, Calif 1 tel -534 PAGE 4 OF 4 PAGES
Official veathor Rovort = Hamilton eather Stations dseabtbner in ilaailton

and Sonoma area: Cloar, visibility 10 miles with wiads froa the east at 7 knobs.
7. Nozative.
3. Negative.
9. HKegative.

10. Location of Air Traffic in Goneral Area at Time of Sighting:

No other air traffic in area at tims of sichtins.

a
ULerery off Ef eA
~e i
porey (4 HAuG
Cuotain, Usal
Cniof, Operational faseollisance

yy A
DECLASSIPrae 2 PPAR rye
DO “il hy d lu he "AT .
n 4D IR ‘) » te CAR -
¥s00 Th 4A

— oe rr et ee ee ee

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7

( ; ( - = : , ;
UNCLASSIFIED rae

¥

Sonoma, Califsrnia 10 January 1953

I. Deseriptton of Incident

At 23),5 3 two civilian sources observed one small flying object moving at a
groat rate of speed and performing violent maneuvers. The object's sound was
similar to that of a jot aircraft. The object made three 360° right turns in
nine seconds then performed abrupt 90° turns first to the right, then to the left.
The object than stopped, accelerated to its former speed, rose vertically and
disappoared.

ITI. Discussion of Incidont

The only known aerial object capable of appearing to go through the described
maneuvers would be a balloon; however, the timo factors and velocity ostimates
do not support this conclusion,

III. Conclusicn

Unknown

mat wo 6m a, Wy te
eit SUNCGRADIED AT 3 shat ,. he
DO ECLASSIFIED AFTER 12 YEAR
POD DIR 6290.10

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1,3 T53-3695