PROJECT BLUE BOOK

B/Ltr froa ALL
itd 5 Jan 1919
Subjs Project

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ANS O35 lst Ind 2k, Jan 19h9

HSADQUARTERS, AIR WSATHER SERVICE Andrews Air Foroe Basa, Wash~-
fmzton 25, De Ce.

TO: Commanding Coneral, Air Materiel Command, Wrirht-Patterson
Air Force dase, Dayton, Chilo
ATTN:a° MCLAXO

Investications by this headquarters reveal that a synoptic
veathor balloon could have beer at the location where sishtings
vore reported in’ the following ircidents. Im compiling this

List oonsidoration was given to the wind diroction and spved at

the aurface and aloft at the scheduled times of balloon release, and
the location of the nearest weather station making balloon obser-

vations.

2 9) 124
, 3 72 9% Lg

iy 73 ol, 155
“5 75 | 105 144
oe ra 11: 1é9
5) 87 115 172

/s/ We. A. Hast
2 Inclss; We. Ae WES
n/o Lt. Col., USAF
Adjutant General

~se™

>

Nesp HEADQUARTERS
AIR MATERIEL COSMLAND
Wriceht-Patterson Alr Forss Bassa
Dayton, Ohio

P

YC IAX0-3/HNS/ra
Jan 5 199

SUBJECTs Projest “SIGH”

TO; ‘Chief, Air Weather Sorvice,
‘Andrews Air Force Basa,
Washington 25, D. C.

ATTN: DSS
1, Project *SIGK” is resporsible for tho coll» on, investi-~
ration and interpretation of data relative to sizhting of unidontified
fiyirg objeots, Attached Insident Summaries | thru 172 from the fllss

of Projoot “SIGN” are forwarded for study and revoomwndations as to

which of the inoidents may be osliminated as balloons released on routine

yynoptio ascents by the Air Veather Service, the Havy Avsrological

“Sayrviosa or the tnited States Weather Bureau. The aumcariss attachsd

may be retained in your headquarters for worklaz and reference purposes. ¢

r '

*) +

2. The Air Weather Service is the only arenoy of its type that

“a

* “ . a = » . > P "3 - ~~ we “ —
has beem asked to assist in the acoonplishmeant of Projeot "SIGN" oxcapt
that the United States Yeathor Bureau has provided tnformation on Dall
lightning. Research projects in whioh balioons are used and which ars

gonduacted or avonsored by the Arny, Navy or United States Air Force aro

aneoked by the Intelligence Decartament of this Command, Thase chsoks
. 5

hens ~ Pe . 4 j ee) “ ya ws w 4 Pt...
wousually made direst from the Projesot “SION” Offias, MCTASO-5, These
shinee are distinot from ths ohack of synoptic balloon flights nade by
4. J +n my 7 te ’ , - 7 7 "er a * , ~~ . ~ *
a t? at wer ao rvicea sta tions Ui 3 4 5 ras 5, of ’ eh / Lna Te +) *4 >.> S yy. Be ,
of Commerce, (U. S..Neather Bw eau) requested of Air Weather Service.
;
4 [+ ta the opinion of this office. that the delow listed inoi~
Jante are those having the greatest possibility of being balloons. ‘his
int does now sliminate the possibility that cany of the romaining
insldente ars balloons. ‘
' es) ' a —_ e
: , + Z© 91 1 “ ‘ » ”
’ r 5 Oy 7% 4
j { — , > ~
s/ ’ . :
} 5 vi } 154
i a w
? 5 ; 3

Hq ake, Ch oath Via a 25, Ds Cs
Subj;
Lh. The form used in interrogating witnesses to sightings is
inslosed as a matter of interest. Comment aa to possible inprovenent
of the "Essential Elements of Information” in regard to routine
Bynoptio balloon flirhts ia invited,

5. it is raquested that sorrespondence be forwarded to tha
Commanding General, Hoadquarters, Air Materiel Command, attention
Be @ TAXO#4 4

FOR: THE” COMCIAMDING GSNERALs

4 . " 7T°S ad
jaf Clingsrman, Col, USA

/ P 4 ~~ : 7f . fit
e I rg i 4% a Pe 7 ROL SL, .

Summaries 1-172 inolk bonel, USAY

Mere a) Int 3 D +
Set » intellizense Dept

Copioa furnished,

AFOETR, Hq. USAF
Cant Trakowski, Geophysics Lab
fru?’

Riajor Kodie, UCHESP
Solormml Weal, ALAS