PROJECT BLUE BOOK

UNCLASSIFIED

fron the station tn Zong i: and tn 28 clese as 33 rdles in Zone kh. OLS,
UATTSON advised that on Friday, 3 March 1959, ab nvnrexicately 2305
hour8S, after no had left a ots porty in the Officers? Club and having
had ently cone besr during the ie rse OF bho ovaning, y 23 had cotarrsd a
yelloutal: light in the sis. UATISCH, at this tims, was driving his
cas from the “ofeteers * Clu sn the disgction of tho PX on Selividcs
Air Poree Bass. ife slowed his csr com and observed the lisht, the
size and teilliansy undotermined but dasesribed ta be the eorreximsta
color and atza of an electric Licht within a house showing threvch 2
normal size window at 2 distanea of eheut 50 to 75 fest on a dork
nisht. The Light was destending vertically cvoer tha Base ree at
ware appeared %o 62 a flare ous, dus to che color of the light, it
vealised it covwld not have been a flav. *.. TTSOy then 3 eek Pa his
pon and chserved the lighd furthss, The light thon procesded vestward
holding the sare asimith for approximately ) te 50 miles. The lights
then went soutovard cppranizately tie sama distance, stepping and
returning nortimard fren the —— ting of sights tha sara distance
giving the nerth-seuth movers appronizately £0 to 100 nie3. This
cocursed within gour (4) simten of tix,

3s Come ves Persons Saris this interwatien appeared to be
portioulekly sincere ond interested,

he ON: Two copies mailed tiutoush Olstrics O?fica No. $ to
Commanding Censzal, Ait Materiel Comans, MrightPattersen Aly Pares
Bese, Usyten, Ona, AVIN, SDIA. fd Taienal copies forrarded %03

Sth OST District (Ic} (2)
Comaniing General, fenta Als Fores (2)
Commuan: ding Orr teors g608 Fichter
Lnversan + or Wings Sez 2079 ASB (2)
Commanding officer, Suist Aces ( Go» (2)

2. S.RES
Usajor, USA
District Commender

DOWNGRADED AT 2 YMAR INTERVALS;
DECLASSIFIED AFTER 12 YEARS.
DOD DIR 5200.10

UNCLASSIFIED

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4

HEADQUARTERS Aasfitiee :
‘ CONTINENTAL AIR COMMAND by Auth: Cur vou
MITCHEL AIR FORCE BASE, NEW YORK “% §o6 195° Ln (7
OY kere Mcs-
, (Date) (Asi subs }
; INT 373.5 (8)
a |
: ath
| SUBUOT; Unidentified Flying Object 50
TO; Director of Intelligence, Headquarters United States Air

Force, Washington 25, De C.

1, Attached for your information are two narrative resorts con=
cerning radar sighting of an unidentified flying chjact,

2. The fact that the object was sighted on the scopes of two (2)
racars is considered worthy of speciel note,

Se Comment of technical exverts, this headquarters, was solicited
and is quoted in part for your consideration:

a. “while it is relatively well known that various ionosvheric
conditions cause reflections at lower frequencies, it is usually consid-
ered that these iayers have no effect at the frequencies used by the two
radar sets mentioned excent when temperature inversion or other atmos-
oheric or troovosoheric conditions cause ducting and spurious reflections.
Presuming that such idealized conditions existed at the time of these
observations, it is conceivable that an actual small change in physical
lateral motion in reference to the radar set could cause a seemingly
greater change in relative position of the ‘object' as observed on the
radar scope due to the varying vath lengths the radar energy takes to
and from the ‘object’ as a function of the frequency sensitive layers

\ and angles of incidence of the vronpogated wave. However, the ¢reat dif-
x ference in the frequencies of the L-Pand CPS=-5 and the S-Band CPS<4
» radar sets and the evident correlation of observations between these two
sets almost rule out the possibility of anomalous propagation effects.
, eH Furt’er, the magnitude of the velocity and accelerations of the three
x dimensional movements of the ‘object’ reported are beyond the capability
/ of mown heavier or lizhter than air vehicles in controlled flight, —\

b. "Also substantiating this unlikelihood, is the fact that .
the ‘object' was reported as remaining stationary in free space for a aA
mean-neriod of two minutes. “J

c. "Further validity is lent to the contention of the reports r\
by statements that first indications, which were at high altitudes, were

¢

DOWNGR RBADKD AT 3 YEAR INTERY ALS ;

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CLASSIFIED APTER 12 YEAKS , =
DE NOD D

sS0519: —

ey DOWNGIA fet ‘ :

DECLA: ‘ban’

. . .
4 ** ‘

. INCE S85 .6 say is

@O = EN c 0 @@

INT 373.5 (5), "Unidentified Flying Object", (cont)

observed on the CPS-4 height-finder before being observed on the CPS=5
surveillance radar set. This follows logic and field exnerience, inas-
much as the high altitude coverage of the CPS=5 is known to be poor and
the antenna is not capable of being automatically tilted as in the case
of the CPS=4 on which the controller may tilt the antenna within wide
limitations to observe any high altitude or hizh angle objects. It is

to be noted that orevious field experience with s CPS=-5 surveillance
radar set has indicated that targets vicked uo at ranges and altitudes
indicated in subject report would probably have a reflection aspect ratio
in the order of magnitude of a B-29 or greater.

ad. "In the absence of detailed vertical and horizontal cover~
age charts for the specific radar sites and comorehensive weathsr reports
for the area during the period of time these observations were noted, a
mors complete study or evaluation at this time is not feasible,

e. “In summary, no known electronic phenomena, nor combinations
of several electronic phenomena could conceivably produce all of the ob-—
servations covered by the attached revorts."

4, The frequency of reports of this nature has recently increased;
instructions have therefore been directed to all radar installations within
this command to report scope sightings of unusual objects,

5e It is recommended that reports of unidentified object sightings
be reconsidered for submission from all Zone of Interior Air Force arencies,.

FOR THE COMMANDING GENERAL: , ,

\y ots

\ i. Report of lst Lt. F.E.Parker
2. Renort of lst Lt. F.K.iMattson

DOWNGRADED AT $8 Yisan Inyrieps
DECLASSIFIED AFTER ; a: re Abs,
DOD DIR 5200 7EARA,

“vs iar) At ae ee
. A ri (> wet inl AL

. on” JS A ‘slatinoe |

is 2: Lt Fe siGis Be PARTS itp AS 745 “oo, $3157 AD és me 3 .e swe YWLse welsdder »

SSLFRIDGE ATS,

1
t-
_
+
,

On the nicht of 9 Lar 50, our radar
soniterins nist flying sy waits
‘roux, Selfridze A235, Mohs I came on duty as croximately at sundow,
relieved ist Lt La:tson at the PPI scose (of ths AU/SPS<5 Rader Sich’),
and estadlishsd contact with the F<50's alraady airborne. Lt iattson,
Ss% McCarthy, and Col Welton, who made up the rest of our crew for
this nisht, mentioned to meat this time that an aircraft hed been
Dicked up intermittently ot the aki scope of the Al0/oP5—4 heisht
Pinder radar et 45,000 feet and over. I kmew the highest assizned
Altitude of the F=-S0's was 24,000 fset; the tarrest was not at shat
tine visible on either radar scope, so I attributed the report of
the ‘aish flyins aircraft to interference, crew inexverience, or
both. Uver the next fifteen minutes the rest of the crew, montioned
above, repeatedly reported tiis Aish flying tarcet at asvarently
ravidly changin; altitudes without my being ably to turn sround
rapidly enoush from my moniterins of the r<30's in the area to
observe for myself. Finally, however, I saw this tar-et which was
a very narrow and clear-cut presentation on the IRI scops. It was
at aporoximately 47,000. feet shout seventy (79) miles out, and the
indication was definitely not that of a cloud or atmosoneric
phenomena. I checked pilots in ths area by Vii’ and was assured by
P-30 pilot eat the Aishest assisned altitude that he was at 24,000
feote. The clarity, narrowvmess, andi Setaesvees of the oresentatioa

»
fF

4
iy’

4

was definitely that of an aircraft ne tarzset cave a similar
presentation to that :iven by an 220, ond if anything, narrowsr.

r* arve rarlsati
it was definitely at this time not ores resenting @ very. larse retisoting
surface towards cur staticn and I cot. nos st this tive pick uo the

aon

target on the CrS-5, rulint out £55 or 3S 18r larzse sircratt. Further
insisations of tils tircrafs vere nicited ‘» intermittently but wit!

increasins recularity for the ne 2s ascene or ean hour, and entrizs
weve made of theses oncurrences in the controller's los by 3b ieJarthy.

ct

Vv

smfortunetely, novever, the timss on this los, thourh relativsly
fairly corracs, are inaccurate, due to the extrsme inaccuracy of ‘

3% “overshy's watch. During tris period, acnroximately 1945 to 2050,¢
this tarcet s2eiisc to stay in the arsa in which our fi =hters igre
tlyins, sometinses aocroxinetins their co urses, but 20,000 fest adrove
then. Durins this sams “AS cimaite period, Lt .attson and other

members of tne crew reported, botn from ths AI scove of

i. oa Tf Ire a Lad a) . : ; i) -““) T
1S ~s oy ws 3° oes ean jshar wos

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° 4 == +"a os f . —~at
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ED AT 3 YESE INTERVALS;
UNCLASSIFIED AFTER 12 YEARS.

/ UNCLASSIFIED 3
-0@

© it pro-cressed frou
st to a sesition at
in 4.- minutes, This
9)

the terzet hovered in one position end also tha
ion tiven as 270°, 73 miles at “48, 000 fs

t

53 miles at roachly the same altitude,
Pa. «wt .

Would Sive 4% a seed upwards of 1,500 miles

2 camot substantiate this $3244. Covsrase of tarset durin: this
run Wise resortedcly insernittent and ths times were not to

kno wledze aoouratel-s taosulated at actual instances cf j

uD during this run. Sussequsnt individu i

.

’ = m) : -
par nour for this rune

; T urd. a4, .

_ ht MILie br ula

“Lth “embers of the crew bsar out tees nossivilities of inaccuracy in
“

tn

Ciming during shis run. I imew only that the tarset was very fast.

—_
I ovserved durin eee period, by somentarily turnin: around and
wateohing the RI Tele) several extrone instances of gaiaing altituce

aud losing altitude Putha not adle at tri
acbual ficures, dut “observed it losins end
very rapidly.

Sime to taxze dowm th
ainint up to 20,060 r

ee

3
ee

%

i was able, at 2046 “ST, to identify this aircrais on sy !
scons (t/cPs- §) and simaltanecusly on the 2RI scons. The only
actual timings and fissures I took down on this tarcet 1 did curing the
six minutos from 2046 to 2052, durins which tims this aircraft was
civineg indications on both scopes without fads. I took dowm tie
ranse and agimuth on tae minute for this veriod and St VoOarthy
took dowvm the altitudes. (S.-t iicCarthy's times were off as afore-
mentioned but in this case, due to the fact that wa were both follow-
ing the same target, I have reconstructed these tims into my own,
wnich wers taken in crease vencil directly on the scope head, and
later transcribed.) ‘Information recorded is as follows:

oOpT
--_

Tis AZINUTnR RAGS Ill s1iss ALTITUDS IN Fast

—=!'

2046 150° 45 25,000_—«’
2047 152° " &9 23,000
2048 146° 58 35,000
2049 142° 60 $3,000
2050 53° $7 35,000
2051 138° 1S $3,000
2052 33° 72 33,000

ite
‘i

se Tfisures, althoush not as svectacular as so
ond sveeds I had observed, show definitely the erratic s
alt itade en lances. The differencess in speed from cone min

next were aonarent to me as were ths clirnbs and dives. At 2052 the
aircraft faced Prom the PPI scone and was nicked wr for neriods of
O46 and tro minutes wo to 120 miles. i% apnvared to hover for wiwo
silnutes at approximately 110 miles distant. It faded ac 120 milics
Sor the lest time. The hsichtelinder carried this alrer2rt oast the

DOW NGR ADED AT \- age oN reERVALS:

AS' Sil IED AF i r. is 2 YEARS.
WN CLASS SIF iene DOD DIR 5209.10

mews Oe

>

@®@ UNcLAssiziecdD @@ co

six minute veriod listed above to a 123°, 87 miles 51,000 Pest wi
is faded for the nicht from the CPS-4.

‘Tne CPS<5 wis very accurate on this particuler nicht which vu

ACA WES
sadzorted by F380 silots agreement with many ‘seosranhionl sesitions
siven them off the CPS-5. The an/c PS-4, though & more erratic pisces
se equipment, oeculd not, through any lmown or prevalent vealmness

1 its Shevetion, account for this manner of oxtrone enhances in
artsy i went over all possible errors which could be induced

A0/CPS$-4 error e: xhaustively with my technical versonnel.
Wwe are continuing investisation et this station.

I have been & rated pilot since 12 Aor 43, and havo been assigned
to controller duties for approximately 25 Coly 22 years.

Faun & ee

FPRuCIS &. PARKIR

lst Lt, SAP

S DOWNGRADED AT ° YFA8 INTERVALS:
DECLASSIFIED At YEARS.
DOD DI 5
ar 5 ye
Pu {©
IC} ACIS cys _Y
UNCLASSIFIED r

— eee ~<a = +

_—— ~"- «= + a—e

Tis 4g be.” %
se NGMASSIEIER FORCE

HEADQUARTERS UNITED STATES AIR FORCE  5D-0SI/Diil,/fmn

WASHINGTON
THE INSPFCTOR GENERAL. USAF

STH DISTRICT OFFICE OF SPECIAL INVESTIGATIONS
WAIGHT-PATTERSON AIR FORCE BASE, DAYTON, OnIO

in werty weren to; 5D 2).-21 U, March 1950

ad **
1 FP S8le-WPAPSa-Lizes worth Crannmert

SUBJZCT: “PROJSCT GRUDGE" Unconventional Type Aircraft
(Unexplained "Blip" on Radar Scopes Caused by

Metallic Targets)
SPECIAL INQUIRY

TOs Commanding Ceneral 3 ° f of
Air Materiel Command .
Wright-Patterson Air Force Base

Dayt ON», Ohio
ATTN: MCLIAXS

(AAD

The attached copies of a spot report regarding the above subject,

dated 10 March 1950, are forwarded for your information and file.

1 Inol AVSS F, X- 0° (Gam

Spot Rpt dtd 10 liar 50 Lt Colonel, USAF
(in dup) District Commander
lst Ind MCIAXA-1/JJR/ed

Headquarters AMC, “right-Patterson AFE, Dayton, Ohio.

TO: The Inspector General, USAF, 5th District Office of Special
investigations, “right-Patterson ATE, Cayton, Ohio.

7

A

1. This Command is desikxous of Aurther information from the stand-

point of radar:
a. Would like to know/tha type of radar equipment used.

db. Also would like to know what the weather conditions (in
detail) were during the period in question and immediately preceding.

x
ANALYSIS Ciryision Fig Ge Did fighter planes observe anything unusual, or did they
+ + »
report any unusual turbulence in the area? Nomrap ADED aT NZ re
4 DECLASSIFIED a ORAL Jt
“Atys FOR THT C OPT ANDTIG GENTTAT.: cai bed > sone B |
ot Nes a > hve ‘~ at, .*
‘ . =v,
wd R - Aj } ee : 5 " oo e ~ = \* Cy - +e Wa - Z Sy

1 Inc HAROLD Be ATSON a

Colonel, USA

te Ly
Chief, Intelligence Dever

gl NCUssiFien :

ee Se oe $ sat ~—s ao
—74° ““y rene ery . 2
. AVODART Re on DUTY ae 2 se! hoo f At FERCS

»>-~seP

VASSIRGION

‘ the Taumotor Goneral USAF
25th Distries Ofties of Special Investigations
Box 326, RPA, Detroit 32, Michis san

10 March 2 2550
SPOT INTELLIGSICE REPCRT

SUVEST: Uneomventional Tyne Airoraft

. (Unexplained "Blip" on Radar
Scopes Caused by Metallic Targets)

TOs Direster of Special Investigations
iisadquarters United States’ Kir Fores
Wasnington 25, D.C.

ATTN: Comber Intelligence Division

‘ 2. SYNOPSIS: ist Lt. met IK Ky EAYTSON, Ao 926313, Radar Operater
and Controlicr, Gélst AC & W Squadron Selfrides Air Force Base, Wich.,
and ist Lt. MRANCI3-B. PARKIR, AO~ThILic9, same dutles, sare eegmigation,
did on 9 ifarch 1950 observs in radar scopes unexplained "Blip". The
"Blio" acted in a peculiar mamer. It cs asaumed ty MATTSON and PARKER
that the unidentified "Blip” wes of an uncom ontdionat typs éireraft. ..
Ooservations of "Blip" also recorded by calisted personnst on duty. -.
duming tae concerned period of oe
2. DATALTISs Lt MATTSON wae on auty fin = ‘0s 3 mer Section

n 9 Marc T98N to contrel the positions of local, 45% alver Oosar=
vations nd dontrel sore normal until 2nproxcinat: oly 1948 2 wry a% which
Sins MAMSOM observed a Blip" on on the “IRI" seox nt opproximately
1O,000 faat, vanes and aziomth holding oteady at 270°, 6S xiles. "Blip"
25 ert Lient for 2 tor seconds, then fadad, ond cane back at a different
Location apprexicstely Nive (5) “minutes inter. AS thie tine other radar
cperators cbserved tho “Dlin* and questioned it. The estimated speed,
which was not well founded but aasumed to te abowe <500 miles per hour,
is 2. combination of vertical speed and horizontal speed based on various
ves ‘ors corived from the instruments. The “siip” wes observed whan
picked up the secon! tine to mova laterally to a bearing of 35 345° and
wad obsarved be be consistent for about three (3) ninutes wit ro tha "PPr"
scops, MATTSON, during this-period of tice, did not record the tater

ration ina 102. Hovwsvsr 2 his curacsity caused him to contect yart
43% fichtors in the crea to datermine their altituie, tearing, ani

A 5+ 8 View _—— i)
a

‘eee ~~ > a nin a’ ma 44,2 alow -“"
‘ 3c J a donola Ne we < Ulk ek ce eth ae JSCD SL ae

he Radns Reon one. tuzned over contrellor verk to

DOWNGRADED AT 2 YEAR EINTERVAT*:
DECLASSIFIED AFTEL 12 YEARS ~
un CLASSIFIED DOD Dik 5200.10