PROJECT BLUE BOOK

PROJECT 10073 RECORD CARD
1. DATE 2 LOCATION 12. CONCLUSIONS
20 Apr 61 Hanna City AFS, Illinois . Was Balloon
X Probably Balloon
3. DATE-TIME GROUP 4. TYPE OF OBSERVATION 0 Possibly Balloon
Local 1820 Ground-Visual Ground-Radar 0 Was Aircraft
0 Probably Aircraft
GMT 21/0020Z Apr 61 AirVisual Air-intercept Radar 0 Possibly Aircraft
5. PHOTOS 6. SOURCE 0 Was Astronomical
0 Probably Astronomical
"ilitary 0 Possibly Astronamical
7. LENGTH OF OBSERVATION 8. NUMBER OF OBJECTS 9. COURSE Other
000 Insufficient Data for Evaluation
I hr 4 min One - - - Unknown
10. BRIEF SUMMARY OF SIGHTING 11. COMMENTS
Ub.fect at very him altitude piekeo up on Radar analvists believed object to be
redar. Heient estl-atad at 97,Oo0 ft on balloon. The bahavior of the terget
Dearing O96 detre 3. Disappeared at l0,000 (speed, rate of descent, and evident
ft after slow descant on heading of 075 deg. size of target)all point to this
Descent at lo nm variation. conclusion, heavy appearance beine due
to either low inflation or heavy load
of the instrument package.
ATIC FORM 128 26

NNNN
1961 APR 22 02 29
CZCSCH751ZCYY0311
PP RJEDSQ
DE RJEDAHO 3
ZNR
P 2122332
FM RLEPAHO/ 7SIST RADRON SAGE HANNA CITY AFS ILL WE2
TO RJWFAL/ ADC ENT AFB COLO
RJEDAH/ 32 TH ADIV TRUAX FLD WISC
RUEDSC/ ATIC WRIGHT PATTERSON OHIO
RJEZHA/ Ha USAF WASH DC
RJEZHA/ RUEZHA/ WASH WASH nc
E
INCLAS FROH 7SIOOP BIB4. FOR AFCINGN SAFIS. IMMENIATE UNCLAS FROH 7SIOOP BIB4. FOR AFCINGN SAFIS. IMMEDIATE
REPCRT IS SUBMITTED IAW PARA 15, AFR 220-2. A. (1) N/A, REPORT IS SUBMITTED IAW PARA 15, AFR 233-2. A. (1) N/A,
(2) N/A, (2) N/A, (4) ESTIMATED ONE, (5) N/A, (5) N/A, (2) N/A, (3) N/A, (4) ESTIMATED ONE, (5) N/A, (5) N/A,
(7) N/A, (3) N/A, (3) N/A• B. (1) HIGH ALTITUDE, (2) 37,33 (7) N/A, (3) /A, (3) /A. B. (i)HI E297,33
FT AT 836 7EG. (3) 1à,D3D FT AT 395 DEG. (4) PERPENDICULAR
PESCENT WITH A 10 NM VARIATION. (5) FADED FROM RADAR INDICATOR,
(3) N/A.D Hanna CITY
AFS,
HAMNA CITY.!F.(1)N/A,2) RICHARD LHITMER,

/
PAGE TWO RJEDAHO 3
A/3C, 7SI RADAR SQ (SAGW). RADAR OPERATOR (SAGE), VERY GOOD.
WILLIAM L. MAULE II, A/IC, 79I RADAR SQ. (SACE), RADAR
CPERATOR (SAGE), EXCELLENT. G. (1) IAW INFO RECEIVED WINDS
WERE HEAVY, WITH RAIN SHOWERS AND THUNDERSTORMS FORECASTED
FOR THE AREA. (2) SFC WINDS FROM SE AT 20 TO 35 KNOTS, WITH GUSTS
TC 45 KNOTS. WINDS ALOFT NOT AVAILABLE. (3) 1 TO 2 THOUSAND (
ROKEN T0 OVERCAST. (4) 1-3 MILES. (5) UNK. (5) UNK. (7) UNK.
H. NONE. I. NONE. J. N/A. K. THE CHARACTERISTICS OF THE UNKNOWN
WAS SIMILAR TO A DESCENDING BALLOON, HOWEVER, DUE TO HEAVY
WINDS AND THE AMOUNT OF DRIFT, THE DESCENDING OBJECT SEEMS TO I
MACE THREE RUEDAHO 3 MACE THREE RJEDAHO 0 3
INTICATE A HEAVIER OBJECT. THUNDERSTORNS AND SEVERE INDICATE A TIER OBJECT. TH SEVERE
TURBULANCE WERE ALSO FORECASTED AT ALL LEVELS IN THIS AREA.
A SMALL VARIATION IN THE ANTENNA TO THE RIGHT OR LEFT OF THE
OBJECT WOULD CAUSE THE OBJECT TO DISAPPEAR FROM THE RADAR
INDICATOR, WHICH INDICATED THAT THE OBJECT HAD A SMALL
REFLECTING SURFACE. AT THE TIME OF THE S NG, THERE WERE NO
KNOWN AI ea. L. None.
2/23452 APR1L RJEDAHO

AEROSPACE TECHNICAL INTELLIGENCE CENTER
UNITED STATES AIR FORCE
WRIGHT-PATTERSON AIR FORCE BASE
OHIO
REPLY TO
ATTN OF: AFCIN-4E/Maj Friend/vw/69216
SUBJECT: UFO Report (Radar) 25 April 1961
TO: AFCIN-4E1
l. It is requested that the attached UFO Report (Radar) be analyzed
varded to
2. A copy of the format used to report 1OS of
- flying objects is attache ified
or your inf
PHILIP G. EVANS 2 Atchs
Colonel, USAF 1 Inc TWX, 21
AFCIN-4E Apr, 1 cy
2 Par 15, AFR 200-2

Memo, AFCIN-4E, 25 Apr 61, UFO Report (Radar)
4201) 28 Apr 61
TO: A AFCIN-4E
This office concurs
the target probably was a balloon. in the opinion expressed in the basic message, that
The behavior of the target (speed,
of target. Heavy appearance
inflation of the balloon, or of the target might be due to either low
etc. to a heavier than normal load of instruments,
ROY L. JAMES Atchs
Acting Chief
AFCIN-4E1 w/d