PROJECT BLUE BOOK

3. SOURCE 10. CONCLUSION
Airen MEATHER EFFECT ON RADAR
NUMBER O OBJECTS
One
5. LENGTH OF OBSERVATION 11. BRIEP SUMMARY AND ANALYSIS
19 Minutes Source set,
5. TYPE OF OBSERVATION operating on 30 ard 15 mile range setting. Size of blip was
3/16" in width and 3/4" in length with fuzzy edges. Speed
Ground-Radar from stationary to as fast or faster then jet a/c: No a/c
7. COURSE in the vicinity and no other observations reported. Heather
data from weather Central at Asheville requested.
Not Renorted COMMENTS:
8. PHOTOS 1. This sighting wes sent to Electronics (Mr. James) for
analysis and th e evaluation below was ∞ncluded.
Yes 2. Targets caused by WX conditions such as ice, clouds or
7 No rain clouds.
9. PH IDENCE
Yos
No
FORM
FTD SEP 63 0-329 (TDE) Provicue oditione of thje fors

T/Sgt Cerald V. Kelley, A7 1ll9h087, has been peri orming the duties of AFSC
27272 Aircraft Landing Control Technician in the Airways and Air Ccymunications
Service Detachment I 1921-1, 1921st AACS Squadron since Aurust l351 and is stated
to be fully qualified This com
The p personally. S
EOOONE F. REDDEN
2/Lt. USAP
Acs't Acs't Intelligence Officer
AFPROVED: AFPROVED:
Dute W.. Khoki JutW.. Kokni
VICTOR W. H. RANKIN
Captain, USAF
Intelligence Intelligence Officer Officer
12th Strategic Fighter Wing
10
IMorVaeLr

sorgobron Ar Mass, buotin, Tox4s
20 0unary 1))
0 slgntiag of onidantifteg largots
TO: Base intolliganee
bergstrom AF Base
subbin, Texas
it is my epirion tnat. the uidentirled tarpets sighted by Tech-
nical Sergeant helley, Friday, 2h January l953, was not dne to aal-
lunction of the radar set involved. However, I wlsh to make it clear
that I was not Dreeent at the tine ot the sirhting end did not ob-
serve the targets first-hano. ly opinion is based pureiy on the testi-
mony of iechaical Ser rroant Kelley and past canorlonce wlth the partie-
alar raedr set involvad. No evidenes of malfunction has bsen found No evidenea of malfunction has bsen found
or noted since the ingldent. or noted since the incldent.
Chrled Rengan Chulest. Rengn
Charies G. Reagor Charles G. Reasor
TechnLeal Raprasenbasivs
Gilrillon Gros. Inc
8 UNCLASSIFIED

UNCLASSIFIED
Fq ATIC AFOIN-ATIAE-5 Subject: (wrcL) Radar Sighting of Unkmown Aerinl
Object
12Intel 360 1st Ind.
FE8 18 1953
HRADQuART RS, L2ND AlR DIviSION, Bergstrom Air Force Base, Austin, Texas
TO: Air Technical Intelligence Center, Wright-Patterson
ATTN: AFOIN-ATDAE-5
Pasic letter complied with.
FOR THE COOMANDING G OFFICH:
Willas D
WILLARD D. HAGEY WOJG
1 Incl: USAF
r/c r/c . ASS'T ADJUTANT ASS'T ADJUTANT
Thas Thas aightng aightng Canied as ionlonoons Caried as inlenoonn
DOWNGRADED AT 3 YEAR I DECLASS
DOD DIB ED AF
5200.10 12 TCARS 'LS;
UNCLASSIFIED
$
812

for such sightings, Cen-
ter has developed a ouestionnaire for sightings made ground radar,
one of which is e nclosure to this letter.
2. ATTc radar specialists have found the subject questionnaires
of great value in attempting to explain radar conbact with unknown
flying objects when they are filled out comoletely and
the radar personnel involved.
3. ATlC would, therefore, completion and forward-
possible conveniencs, convenience.
FOR THE FOR THE COMMANDING GENERAL COMMANDING GENERAL
3
CobeteBrin
COORDINATION ROESRG. DROAT
3 Mejor, US/F
ORGNL CODE INSERT AND Ar Adj, Gan.
FULL SIGNATURE
h rep DOWNGRADED AT 3 YEAR
ATIAG-5 AFOINL DECLASSIFIED AFT
30953 DOD DIR
SURJEC
H.6Gahmaton 200.10 12 YEARS
ATS,
ILOD.NTAE
2o,
UNCLASSIFIED -
a E/3

use
judgement as to wh degree of classification is required.
It is preferred that the answers to the questions be typewritten, bowever. if it will ex-
pedite the completion of printe additional space
is needed, use reverse side of form.
1. STATION OBSERVING TARGET: DATE OF THIS REPORT:
Bergstrom Cround Cortrolled A proach 12 February 1953
Organization Day Month Yoor
Perestrom Air rorce Base, Austin, Tex.
Location
3. DATE TARGET OBSERVED: 4. NAME, RANK AND ORGANIZATION OF
Local Tim REPORTING OFFICER:
23 23 January 1953 January 1953 Z Tim Z Tima 0 0 Eurene F. Redden Eurene F. Redder
Day Month Yoar 2/1t. USAF
Timo-Local1520-1559_Tima-Z 210-2159 Timo-Loc0l1520-1559 _Tima-Z 2710-2152 12th SFW1 12th SFW Intelligence
5. EXACT LOCATION OF STATION (COORDINATES):
30 degrees 12 minutes north, 097 deprees 41 minutes west 097 derrees 41 minutes west
6. OBSERVER DATE (LIST EACH OBSERVER): OBSERVER DATE (LIST EACH OBSERVER):
No. oi Yaars
Name Name Ronk Ronk Duty Duty Exp. in Rador
Airer-ft Landing
A. T/Set T/Sgt Cortrol Techniciar Four (1) Four (1)
B.
c
D.
E.
7. WAS A VISUAL SIGHTING MADE BY ANY PERSONNEL OF THE STATIUN? YES 0 NO
IF SO, GIVE NAME AND RANK OF ALL PERSONNEL MAKING A VISUAL SIGHTING AND A BRIEF DESCRIPTION OF
WHAT THEY SAW:
DOWNGRA
DED AT 3 YI
DECLASSIFIED AF:
DOD DIR 0200.10 TDARS. ILS;
UNCLASSIFIED
ATIC FORM 332 (REVISED 25 NOV 1952)

UNCLASSIFIED
THE SAME TIME THE RADAR CONTACT WAS MADE? YES NO
IF SO, GIVE NAME AND ADDRESS.
9. RADAR SCOPE PHOTOS:
IS RADAR EQUIPPED WITH A SCOPE CAMERA YES NO
WAS CAMERA OPERATIONAL? -.- --- 0 YES NO
WERE SCOPE PHOTOS TAKEN?-- YES NO
WERE PRINTS OF THE SCOPE PHOTO TO THE
AIR TECHNICAL INTELLIGENCE YES NO
10. TRACK DATA:
WHAT WAS THE NUMBER OF THE TRACK?
WAS A PERMANENT PLOT MADE THE OBSERVATION? d Yes 70 No
?1. WERE AIRCRAFT SCRAMBLED TO INTERCEPT THE TARGET? Yes ) no
IF SO, WERE THE AIRCRAFT BEING OBSERVED ON THE SCOPE AT THE SAME
TIME AS THE TARGET? O YES  NO O YES O NO
12. WERE ANY NEARBY RADAR INSTALLAT WERE ANY NEARBY RADAR INSTALLATION WHETHER WHETHER THEY HAD OBSERYED THEY HAD OBSERVED
THE SAME TARGET OR TRACK? YES  NO YES  NO
IF SO, WHICH STATIONS?
13. WAS THE TARGET OBSERVED ON SEARCH RADAR? YES NO YESNO
IF SO, WHAT IS THE NOMENCLATURE OF THE EQUIPMENT? AN/MEN-7 IF SO, MENCLATURE O DF THE EQUIPMENT? AN/MEN-1
14. WAS THE TARGET OBSERVED ON HEIGHT FINDING RADAR? YS NO
UIPMENT?
.
15. HAVE THERE BEEN ANY RECENT MAINTENANCE DIFFICULTIES? YES □ NO
IF SO, DESCRIBE. 3o00 hour overhaul Decerher l952
16. WHAT TYPE LATOR (I.E., SPARK GAP, HARD TUBE, ETC.) IS USED IN THE RADAR EQUIPMENT?
Hard Tube
17. WAS THE AFC(AUTOMATIC FREQUENCY CONTROL) CIRCUIT OPERATING PROPERLY? YESNO
COMMENTS: AFC was out of the circuit in off position at the tins of chservatian..
18. HAS INTERFERENCE FROM ANOTHER RADAR SET BEEN OBSERVED RECENTLY: YES NO
COMMENTS: No other sets in proximity
AT3-YEA
CIED AFTER HS ITERVALS;
ATIC FORM 332 (REVISED 25 NOV 1952) DOD DIR 5200.10 YEARS.
2

v UNCLASSIFIED
19. ARE PERSONNEL FAMILIAR WITH THE EFFECTS CAUSED BY AN INTERFERING SIGNAL? D YES U NO
COMMENTS: Observer has observed such effects at other stations
20. ARE PERSONNEL FAMILIAR WITH THE EFFECTS OF ANOMAL AGATION (DUCTING EFFECTS) AS THEY
PERTAIN TO THIS TYPE OF RADAR? YES LANO
2. HAS ANOMALOUS PROPAGATION (DUCTING EFFECT) BEEN OBSERVED TO EXTEND THE RANGE OF THE
GROUND CLUTTER OF THIS RADAR AT THIS SITE?  YES NO
COMMENTS: Unk unfamiliar with effect in this typs of equioment
22.
THE TIME THE TARGET WAS OBSERVED? YES NO
COMMENTS:. SeePar.21
.
23. HOW DID THE TARGET APPEAR IN SIZE AND SHAPE AS COMP ARED TO CONVENTIONAL AIRCRAFT TARGETS?
An roximately twice as larre as I normal A/c tarcet at that renge
.
24. PERFORMANCE OF TARGET:
REMAINED CONSISTENT IN SIZE CHANGED SIZE RAPIDLY 0
b. SPEED WAS CONSTANT SPEED WAS VARIABLE D
c. FOLLOWED CONSISTENT TRACK APPEARED, DISAPPEARED, THEN
REAPPEARED IN NEW LOCATION
d. FUZZY COMPARED TO AIRCRAFT SHARP COMPARED TO KNOWN .
TARGET * AIRCRAFT TARGET
SAME AS AIRCRAFT TARGET 0 :
25. WERE OTHER TARGETS (KNOWN) OBSERVED IN THE SAME GENERAL AREA, AT
TIME AND AT THE SAME ALTITUDE AS THE UNUSUAL TARGET?YES NO TIME AND AT THE SAME ALTITUDE AS THE UNUSUAL TARGET?  YES NO
IF so, Descrise. Normal flow of traftic was leing controlled aporoximately 2O miles IF so, Descrise. Normal flow of traftic Nas leing controlled approximately 20 miles
distart fron target at altitudes from 25oo to ground
*
26. WHAT TYPE INDICATORS ("A" SCOPE, "B° SCOPE, ETC.) WERE USED FOLLOW THE TARGET?
FPI scope used (A&B)
DESCRIBE THE
27. N RATE? (30) Thirty RPM
28. WHAT WAS THE FREQUENCY OF THE TRANSMITTER?
Approximately 280n re
29. DID ANY OF THE OBSERVERS HAVE ANY OPINIONS AS TO THE NATURE OF THE TARGET?  YES  NO
IF YES, GIVE THEIR NAMES AND OPINIONS BELOW. Target appeared unusual
ond actions
UNCL
DED AT 3 YEAR INTERVALSI
DECLASSIFIED AFTER-12 TEARS.
ATIC FORM 332 25 NOV 1952) DOD DIR 5200.10

30. IF SCOPE PHOTOS ARE NOT AVAILABLE, PLOT THE TARCET TRACK AS ACCURATELY AS POSSIBLE. GIVE
THE TIME AND AL TITUDE (IF MEASURED) FOR EACH POINT PLOTTED. PUT THE NECESSARY RANGE SCALE ON THE DIAGRAM.
3300 300
bo.mi
3000 1558 25.mi 60°
Stop then Fade.and
Disappear po mi
15.mi
tationary
154:0 2850 10 mi
275 Apprx 275 Apprx
Course Coyrse Two Statioha fwo Stational
2 70o 700 Targets 285 2870 90
15551
Stationaryat-275o Stationaryat-2750
then follow follow- -- course
2400 120
2100
180
DOWNGRADED AT 3 YEAR
FIED AFTER 12 INTERVAAS:
DOD DIR 5200.10
YEARS.
UNCLASSIFIED
ATIC FORM (REVISED 25 NOV 1952)

.
UNCLASSIFIED
31. USE THIS SHEET FOR ANY COMMENTS, ONAL DATA N
Re. Par. 2hd 1 Target appeared br right in center
re. Par. 2h#*Constart surveillance was nt maintained; hovever, the target when
cbserved did apnear in difierert rances and bearing when trensition from 15 to
30 nile ranre was sccomplished; okever it is rot known whether the target changed
position in the rarver in refere ce or by course to new position.
UP
DECLA
DOD DIR FIED AFTER
5200.10 12 INTERVALS:
YEARS.
UNCLASSIFIED
ATIC FORM 23 NOV 1952)
7

Marek School
Pramne 525 a
hetland Euckholts "CAMEMON
402-
4A eservoirs Cameron
Vilss
Prom bridgs & whduct 14ban KR
rar Sthwertny bricg*
Bapiett
8∠00 de Trestle
Devilla N Cause
Shatp Tanks Minerva
45
Walburg
Friendship Tracy Milano
81 Grawger KR Over
San Gabriel
TEORGETOWN
769-H4! Gabrict
40
Rockdale
Eenein Jon Circleville
037 Ratetrack
Geargetn ROCKDALE
Thorndele <70- H33
YLOR Thrall Chriesman
75 Taylor Tanks
980
A
N Pork& Retinery
reservoir
Hutto Caldwell
ound Rock
Tanglewood
AcNeit Coupland 035 035-
Pluterville Beaukise Beaukise-
Deanville
AERO TEL AEROTEL AUSTIN4ADIO AUSTINRADIO
20+-21 1125 AUE Lexington Lexington
<215 <215
579
prinkle Elgin Dime Box Dime Bax
1014 Manor
Butler PREWITT '800 800
10
MUEALER Kidn
637LH46 6374 H 46
INSTR 165 INSTR 1S SYSTEM McDau McDau
272 1183 12618 Lincoin Lincoin
A
Webbervitle Manheim
River N
GSEROM AFB Colora do Camp Paige Gidding:
T5LMO 3 s0 bricge Swift
GGAODF Arnteticteld Ledbetter 447
1818 2366 tlogs
n GIDOINGS
620+ t 27
180 span
Golf eourse
moor Cecnt-Crcek Bastrop
CAUTION A 1 soan 652
AREA bridge
6000 TO 20,000 FEÉT Winchester O'Warrent
Springs (C-Z21).
Mencoza SMIINVIL
20 30 324 10
Red Rock 260 0809 Westpoint
Kirtley Rutersvile
O
SMITHVILLE Plum Racetrack* La-Grange KED 3.
203 SWN..
GUENTHER
340--26
30' (Joins San Antonio) 15' 97°J
45'
38G 3901 400 4101 420 4301 440 4501
210 2201 4607 470
2301 240] 250
250 260T 270 280]

which was worked out jointly by ATIAE and ATIAE-5. It is hoped that the informetion
included thereon will afford a basis conclusion ES to the cause of
sighting.
3. While ATIAE-5 realizes the importance of comparing atmospheric conditions,
i.e., temperature vs altitude, dewpoint vS altitude with the anonymous radar pick-
ups, it takes month to receive these data from the Asheville Weather Cen-
tral. If possible, hoped that may be able ossible solution
in the interim.
Ralut n. Prom Ralut n. Drm
1 Incl Incl fo:
File File on Bergstrom on Texas Chief, Aerial Phenomena Section Phenomena Section
Electronics Branch
TO AE-5 FROM ATIAE-2 DATE 10 Mar 53 COMMENT NO. 2
Mr./eemes/leg
55170/BAdg 263A
1. Preliminary analysis indicates a strong possibility that targets were caused
by weather conditions, possibly heavy rain clouds or ice-laden clouds.
2. ther
Trs
Ashtehi-
1 Incl. R. JAMES
n/c DOWNGRADED AT Chief, Radiation Section
DECLASSIFIF! Electronics Branch
YEARS. ALSE
DOD D..
DECLASSIFIED AFTER 12 YEARS.
DOD DIR 5200.10
REPLACES NME FORM 96 54801-3 U. . GOVERKM 0 -506171
DDFEE

Lake Victor
Tow Praneo
Briggs
50 Florence Ch2ce
Buchanan
Lake
BURNET Andice
O BehnovilieO 200
Burnet
45'
Race track Walbu
N Bertram
1040 North GEORGETOWN
Querry Liberty 789-1141
CKingsland Hill Fork
Standare Jon
Geolgetewn
ork
A
'9sp
Marble Falls. Leandef A
300
Cedar Hutto
1298 Park
30'- Found Rock
WEST RANCH
7250k - 37
MeNeil
Round Mountain Paerville
A
ALRO TEL ALROTEL AUSTIN4ADIO AUSTIN 4ADIO
.87 30 20- -21 112.5 AUS
Factory
MARSFEL
VOYLES LAZY V RANCK VOYLES LAZY V RANCH FORD
1100--1S ravis Tavis A Sprinkle
1014 Manor
AUSTIN RACIO
281 AUS -
Pedernales Pedernales MUELLER
'1450 *1450 AUSTIN H 46 H 26
6317
Johnson City /A A t INSTR LDG INLTR LEG SYSTEM SYSTEM
20 272 118 3126.18 272 118 3 126.18
WALLER OT5- 01t SHIELD SHIELD oitol itol
1200 16 1100- 1100 22 27
CAMMACK RANCH CAMMACK RANCH 15' 15'
1300 Webbervi Vebbers
Henly Cedar 1120
7225Valley : BERGSTROM AFB
Dripping 210 B15LM40
Springs GOA DF
561 291/12618 736.6
Marichaca C n
BWUMT
Driftwood Surings 180
Bianco RUTHERFORD RANCH
AMBER4 1000 43 Creedmoor
Buda
716
Bjanco R FAGLE ROCK RANCH Onion CAUTION
1000- H 2E HA AREA
66000 TO 20,00F
Lyfen Springs-(C-221
30 Mendeza
767 Kvie
Kendalia N 50 Wimbure HQ 10 20 E 30
080
SAN MARCOS RANGE
A 266SRO
SANMARCUS AFB
ro San Antonio 546 1 H63
N 388 126.48
30' 344 SAT 29 254 SKF 13 15' (Joins San Antonio) 98%1 45'
300E 310 320 330 340 3501 360] 370
:701 180 380 3901
1901 200 190 200 210
2101 220] 2301 740]
For pilot information see reverse side
Victor airway designations ere shown along the
redials of the omni range stetions.  Limits of
these dirways which are not indicated on this
chart are 5 miles on erther side of the radials.

SEARCH AND RESCUE
Search and Rescue Service is a life saving service provided through the combined efforts of the CAA, Air Force, and Coast
Guard who are assisted by other organizations such as the Civil Air Patrol, Sheriffs Air Patrol, State Police, and such other
agencies as may be available. It provides search, survival aid, and rescue of personnel of missing or erashed aircraft.
All you need to remember to obtain this valuable protection is: M
1. File a Flight Plan with a CAA Airway Communications Station in person or by telephone or radio.
2. File an Arrival Report.
3. If you land at a location other than intended destination, report the landing to the r nearest CAA Comnmunications
Station.
4.
station.
5. Remember that if you fail to report within one hour after your E.T.A., a search will be started to locate you. If
you fail to report within three hours after your E.T.A., the full facilities of the Search and Rescue Service will be
activated.
Searches are expensive, they inconvenience other people, and on numerous occasions the lives of other pilots are sacrificed when
searching for nvo PORT!
RE GROUND DISTRESS SIGNALS
INJURIES REQUTRK DOCTOR. SERIOUS REQUIRE SIGNAL LAMP BATTERY. AND RADIO REQUIRE
1
REQUIHE MEDICAL SUPPLIES I1 INDICATE DIRECTION " PROCEED -- K
UNASLE TO PHOCEED -- --X AM PROCEEDING IN THIS DIRECTION.-↑ - - N
REQUIRE FODD AND WATER - - - F YES --Y
REQUIHEFIRLARMS AND AMMUNITION AIRCRAFS
V L7 — —-J L
REQUIRE MAP AND COMPASS REQUIRE MAP AND COMPASS □ PROBABLY SAFE TO LAND HERE PROBABLY SAFE TO LAND HERE- - - REQUIRE MECHANIC - -—— W REQUIRE MECHANIC - W
IF IN DOUDT, USE INTERNATIONAL SYMROL IFIN DOUDT. USE I TIONAL
SYMRO sOs sOS
57
INSTRUCTIONS:
AI 1. Lay out symbols by using strips of fabrie or parachutes, pleces of wood, stones, or any available material. Lay out symbols by using strips of fabrie or parachutes, pleces of wood, stones, or any available material.
AYL 2. Provide as much color contrast as possible between material used for symbols and background against which sym-
bols are exposed.
3. Symbols should be at least 10 feet high or larger, if possible, Care should be taken to lay out symbols exactly as Symbols should be at least 10 feet high or larger, if possible, Care should be taken to lay out symbols exactly as
shown to avoid confusion with other symbols.
4. In addition to using symbols, every effort is to be made to attract attention by means of radio, flares, smoke, or
other available means. other available means.
5. When ground is covered with snow, signals can be made by dragging, shoveling or trarnping the snow.
pressed areas forming the symbols will appear to be black from the air.
6. Pilot should acknowledge message by rocking wings from side to side.
VISUAL EMERGENCY SIGNALS
NEED MEDICAL ASSISTANCE-
URGENT
USED ONIY WHEN LIFE IS AT STAKE
ALLOK-
DO NOT WAIT CAN PPOCEED SHORTLY NEED MECHANICAL DO NOT ATTEMPT
WAIT IF PRACTICAL HELP OR PARTS TO LAND HERE
LONG DELAY
WAVE ONE ARN OVERNEAD ONE ARY HORIZONTAL HOTH ARMS HORIZONTAL BOTH ARMS VAVED ACROSS FACE
LIE PHONK
RE
LAND HEVE HEGATIVE NO) AFFIRMATIVE
OUM RECEIVER IS (YEs)
OPERATING
USE DROP MESSAGE
ULS
SOTH ARMSFOTNARD HORIZON- AND POINTING MAKE TH MOTION CUP HANDS OVER EARS WHITE CLOTH WAVED HORIZONTALLY WHITE CLOITH WAVED VERTICALLY
TALLY. SQUATTING
IN DIRECTION OF LANUING - REPEAT
HOW TO USE THEM
PICK US UP - IF YOU ARE FORCED DOWN AND ARE ABLE TO ATTRACT THE ATTENTION
PLANE A3ANDONED OF THE PILOT OF A RESCUE AIRMLANE, THE BODY STGNALS TLLUSTPATED
ON THIS PAGE CAY BE USED TO TRANSMIT MESSAGES TO RUM AS NE
CIRCLES OVER YOHIR LOCATION STANO IN THE OPEN WHEN YOU NAKE
AfFIRMAtIVE (YES) THE SIGNALS. BE SURE THAT THE RACXGMOUND AS SEEN FHOM THE AIM.
IS NOT CONPUSING. GO THDOHIGH THE MOTIONS SLONLY AND REPEAT
NEGATIVE(NO) FACH SIGNAL UNTIL YOU ARE POSITIVE (HAT THE PILOT UNDERSTANDS
2.14-52 DOTH ARMS VERTICAL DIP NOSE OF PLANE SEVERAL TIMES FISHTAIL PLANE YOU.
6/6/50

( ..
VISUAL FLIGHT
MINIMUM CEILINGS AND DISTANCES FROM CLOUDS
WITHOUT AIR TRAFFIC CONTROL CLEARANCE
IN CONTROL ZONES IN CONTROL AREAS ELSEWHERE
500'
2000 2000'
500 500' 500'
2
500'
2000' CONTROL AREAS DO NOT EXTEND BELOW 7O0'
MINIMUM CEILING 1000 THEREFORE: CLEAR OF CLOUDS
ELSEWHERE
WITH TRAFFIC CLEARANCE
IN CONTROL ZONES IN CONTROL AREAS ELSEWHERE
500'
2000
500 500'
CLEAR OF CLOUDS - ALL LEVELS 700
D D CONTROL AREAS DO NOT EXTEND BELOW 70* CONTROL AREAS DO NOT EXTEND BELOW 7O*
THEREFORE: CLEAR OF CLOUDS
VISIBILITY MINIMUMS
WITHOUT AIR TRAFFIC WITHOUT AIR TRAFFIC CONTROL CLEARANCE CONTROL CLEARANCE
IN CONTROL ZONES IN CONTROL ZONES IN CONTROL AREAS ELSEWHERE
3 MILES AT ALL LEVELS 3 MILES AT ALL LEVELS
A
1 I MILE ALL LEVELS
I
1
1
L 700'
CONTROL AREAS DO NOT E EXTEND BELOW 700*
THEREFORE: 1 MILE
1
ELSEWHERE
WITH TRAFFIC CLEARANCE
IN CONTROL ZONES IN CONTROL AREAS ELSEWHERE
WHERE VISIBILITY IS LESS THAN 3 MILES ALL FLIGHTS ARE
IN ACCORDANCE WITH INSTRUMENT FLIGHT RULES ONLY I MILE ALL LEVELS
3 MILES OR LESS ALL LEVELS
8
CONTROL AREAS DO NOT EXTEND BELOW
THEREFORE: I MILE
ELSEWHERE
7-18-52

PD SWITCHED BACK TO THREE ZERO RANGE WHERE . OBJECT APPEARED ABOUT ONE
EIGHT MILES OUT WITH ANOTHER SIMILAR OZJECT ABOUT ONE NINE MILES CUT
JUST TO NORTH AND WEST AT BEARINGS OF TWO EIGHT FIVE DEGREES FOR THE
IRST OBJECT AND BEARING OF TWO EIGHT SEVEN DEGREES FOR THE LATER PD
OBJECTS REMAINED STATIQNARY FOR ABOUT THREE OR FOUR MINUTES WHEN OPERATOR
•
SWITCHED BACK TO ONE DIVE MILE RANGE PD TIME WAS ONE FIVE FOUR FIVE
CST PD OPERATION WENT BACK TO THREE ZERO MILE RANGE PICKING UP OBJECT 0
ABOUT TWO TWO MILES OUT ON THREE ONE ZERO BEARING PD OBJECT WAS STATIONARY
SO OPERATOR CALLED BERGSTROM TOWER TO SEE IF THEY COULD SPOT OBJECT .
WITH FIELD GLASSES PD TOWER COULD NOT SEE OBJECT PD THIS WAS AT ONE
FIVE ZERO IST PD BY THE TIME OPERATOR RETURNED TO SCOPE TARGET WAS
LOCATED AT A BEARING OF TWO SEVEN FIVE DEGREES MOVED RAPIDLY ON A COURSE
OF APPROX THREE SIX ZERO TO BEARING OF THREE TWO TWO DEGREES PD
OBJECT HALTED REMAINING IN SIGHT FOR ABOUT THREE ZERO SECONDS AT ONE OBJECT HALTED REMAINING IN SIGHT T FOR ABOUT THREE ZERO SECONDS AT ONE
FIVE FIVE NINE OCLOCK CST PD PAR ACCORDING TO SHIFT CHIEF OPERATOR FIVE FIVE NINE OCLOCK CST PD PAR ACCORDING TO SHIFT CHIEF OPERATOR 3
REPORTING OBJECT IS MOST EXPERIENCE OPERATOR WITH FOUR YEARS 0
EXPERIENCE WITH AN AN PM DASH ONE REPEAT ANNPN DASH ONE GCA RADAR SET 0
PD PAR CLOUDS SCATTERED AT TWO FIVE THOUSAND FEET CMA VISABILITY ONE FIVE
MILES CMA TEMPERATURE SIX FIVE CMA DEW POINT THREE EIGHT CMA WIND MILES CMA TEM CMA WIND 9 3
NORTH NORTH WEST ONE THREE KNOTS GUSTS TWO THREE KNOTS AT ONE FIVE THREE @
ZERO HOURS C TAR5
GET APPEARED
LARGER THAN USUAL TARGETS S EXCEPT LARGE FORMATIONS OF AIRCRAFT PD NO
LARGE FOROATIONS OF AIRCRAFT IN VICINIT TARGET OF BERGSTROM
AREA PD END OF MESSAGE 8
27/2347Z JAN JWSGM
.
DNCLASSIFIED c
.
* ∞

YMA013 IC
WYC007 V -
23/1540 1 1.Atin
WDA267 210te (
BEL LIMCHED AT
JWFGM 072 3.Cf
PP JEDMH JEDEN JEDWP JWPHQ 444 C
DE JWFGM 050 C
P 272325Z ZNJ
AR = C
FM CGADIV FOUR TWO BERGSTROM AFB T TEXAS
TO JEPHQ/DIR OF INTELLIGENRE HQS USAF WASH DC VE Ln
JEDWP/ATIC WRIGHT PATTERSON AFE OHIO
C
JEDEN/CG ENT AFB COLORADO SPRINGS S COLO COLO
JEDMH/CGSAC OFFUTT AFB NEBR FFUTT AFB NEBR
E ONE TWO STRAT FTR WG INT 773 PD ATTN AT1AA-2C ONE TWO STRAT FTR WG INT 773 PD ATTN AT1AA-2C
FLYOBRPT PD REPORT OF UNIDENTIFIED RADAR RETURN PD OPERATIO WAS ON FLYOERPT PD REPORT OF UNIDENTIFIED RADAR RETURN PD OPERATIO WAS ON
DUTY AT GCA STATION BERGSTROM AFB CMA COORDINATES THIRTY DEGREES TWELVE DUTY AT GO
MINUTES NORTH DASH NINTY DASH SEVEN DEGREES FORTY DASH ONE MINUTES MINITE EODTV DASHONE MINITTS
WEST CMA OPERATION AN ANN PM DASH ONE REPEAT ANNPM DASH ONE GCA RADAR
SET PD WHILE ON THIRTY MILE RANGE SETTING TARGET APPEARED TWENTY ONE
MILES DISTANT ON BEARING OF TWO NINE FIVE DEGREES MOVING RAPIDLY
CMA AS FAST OF FASTER THAN JET AIRCRANT CMA TO BEARING OF T 154C TWO SEVEN'
FIVE DEGREES WHERE IT STOPPED PD TIME WAS APPROX ONEFIVE FOUR ZERO . .
CST PD OPERATOF RANGE HANDLE E LOCAL TRAFFIC PD
.
DECLASSIFIED AFTER 12 YEARS.
DOD DIR 5200.10
UNCLASSIFIED
PAGE 050

, B
I
speed and looal jet Ch AP
Fore l1e.
In reply cite Project Blue Bock.
COORDIKATION: DOWNGRADED AT 3 YEAR
DECLASSIFIED AFTER 12 YEARS. INTERYALS;
DOD DIR 5200.10
UNCLA SIFIED
GE PAGES
DRAFTER's NAME (and signafuTe, teAeN required) RELEASING OFFICER'S SIGAAIDR
Lt R. E. M
or, _USAP
SYAIDO TELEPHONE OFFICIAL TITLE
DD173 REPLACES NME FORIM: 1 173. 1 MAY 9 16--35924-3 OFFIcE
WHICH MAY BE USED.

WYC158
JWFGM 070
RR JEDWP
DE JWFGM 052
R 032202Z - -
FM CGADIV 42 BERGSTROM AFB TEXAS FM CGADIV V 42 BERGSTROM AFB TEXAS
TO CGATIC WRIGHT PATTERSON AFS OHIO ITERSON AFS OHIO
/R*D/ ONE TWO STRAT FTR WG INTEL 961 PD ATTN: PD ATTN:
AFOIN-ATIAE REF PROJECT BLUE BOOK PD AF FORM 112 FWD THROUGH CHANS CHANS
PD UNIDENTIFIED OVJ SIGHTED 23 JANUARY 1953 CMA 1540 T0 1559 CST PD
SPEED VARIED FROM STATIONARY TO AS FAST AS OR FASTER THAN JET ACFT PD ©
NO JET ACFT VICINITY OF TGT PD. NEGATIVE REPT OF LARGE FORMATIONS OF e
ACFT IN BERGSTROM AREA P SCOPE PHOTOS NOT MADE PD
03/2301Z FEB JWFGM
UNCLASSI
e
DECLA-SIFIED AFTER 12 YEARS.
~ DOD DIR 5200.10
ayl

where it appeared was kept of abcut 5 mimutes. No
Afurther returns No aircraft ther
observations of an obiect ed.
rero cy
d
APPROVED:
.
O
2 9
1. Statement ative
2. Chart Angtin Area
LS: 02 163
cap mn

T/Set pertinent regulations. observations to the bearings were
made aware of and end nearest mimute. the degy ree
taken at the beginning accuracy of the
1555CST after which the to the center his skill eb
A/NPM-1 unit equimment and
from the aocuracy the
of mechanical DOWNGRADED AT S YEAR ERVALS3
DECLASSIFIED AFTER S VEARS.
DOD DIR 5200.10
i
7T 29270
FA7614
UTMEOT TT 00-3685 0.3685
tr 2-
-6 1
T2. Tor
H Ot peaial Thdd oo rlatifnes
t 8
OMCTVERIED
O

mile range and observed two. separate 2, 285 degrees
respectively for short interval of time
until necessary to return to the fifteen mile range. this time he contacted
Bergstrom control tower and requested that they scan the area with biroculars; a
negative report of sean was received. At aporox 1550 he again returned
to the thirty mile n 22 miles from
made aware of pertinent regulaticns. , tines are aporoximate as they were
taken at the and en chzery o the nearest five ninutes urtil
1555CST after accuracy is to the nearest vere
the dezree