l!'ci.d ent i: t-ionr.r,lnJry, tUa c.lnniJtcr o r bn1: r t JlO rnrh lt 9 ~ pri~ l!J-'8 a;>prox:iai;el7 1500 hours. ~!ria ~n~ b.~n'it.~ L-; C l~ ]oben B. 'SO ,.,.aat.lca lariaioll ::.1.::-I'~uoel Sohool ... "" Air -: !Ja_, ~bo ota ill :'PID li4l left ':';'~dll vyrotit2a~l7 l"UO .. ;:1 ? YOOeecid tA) 'lon~o .. ry, aQ1 juat :>n-vi0 \1a to !U. :0 .:;~ al~tude w.' lJrol t~et ar.Q !"'fJ0~.7 h -:,~Wnt b"d ~aca 130 tlo .. le.L~ .. w-n. J~l~ b:;,f~ compl~,;1ng hi:~ l~.'t t-w.r:u~ be c op 1d~ ni~ f;ur.l, Coloctt.l l:l10333 b$r1 ul4 to be~oAJ' l~k ~ J~..>j.,g' \"elia.n .~ haJ .L'lrs11 tiN~ vo 0. t:erel~ a di;lO orad :~llOI"'i~d o.t aa .C~ll a .. i'-:>9 ?art ot ~. ;>b.jso1a approai t.ly el t 1...:1 .. i !:1 oo.l.or. l'lfid i:..'le of ;arsci1ate~ J";~e.o.!~ t:o t-ne ~lor~ oL t !U:s .~ :.d been d.a;.-k Ot.\o.le o r fJh.l'<lUl tthioh .to tlrttd -:;o ')0 :i?!>rox121l.t 11 i'" "3e~ ~;.'~ .... u:a ~I,)Q the CI\Dlct b~.n ' 1. rg~ cn1 a tor or ~,&.l.l \ ~oloMl ::1JOilla a-ot.ti;l d.1 whioh) alao :rllwze in o~lgr. ~':lili oeoi ~t.r or ""' ~ ~ ~-9~uno or bltin~ !lligh'tl;r to i;.bt ~-.r o f' the Jop :-~r tn. ob- .:rJa r.. ~ ' l o.p9Quano fu-the j o~, o.oecrdi:ss tn ;ol-onel !.L rca'lS~ _.;~ked jdn~ ri1l'ilar to lle }~mt~ q,ncJ cni ~ter O<'n.., !,>ClO'Cogaphi ~b -i n !li ~ _-or t;p~! ly t1 T eoar\d bet bati. l Q"' it t a~:tl,. ..,.o. :alae :: r h.Dw-rnr aa.d :he oo 11 !\ad appeared ~"lr Y r i'OJA bi.m. Oil ~..orl ~ ?J..a. :-a;.Mr t a >.r tt ~l U. ti~ tha~ ch.e oojec't a ~:~. :si~-t. . -: ~-tt:. t.b&~ t;~'l. objso-. -:t.G. + bed olar : ~lOI:Icla "11 '~11 ~ a."ld (')eiliDC totl1'1i t.d J ."ld ~ ~ !l~ C~l:mel BimR*3 aould dete .. :td.Dta -l-,..,. objeCJS hd zaU. AO and :o tlh.u..U :, ... 11 aitd Em. l' ~r harl~ lorl ~"' ~bjeot. c<>lOJVJl :mcscs :; .. ' llariJa f I t li BALL C ~ ~ Dr HYNEX ' S EVALUAT!O:iS ZXTRACTED FROH PROJECT GRUDGE REPORT. 1. Aotronox=lioJ.l e.. tir,h probab111tys ~air or low probnbililys u,tloonll or ordir..tl.ry n1ro:r-n1t~ urotHl ~t PI tt!'Hr:s,. bird to9) rld~:io ~ Jr olud) 1 uxul~11s tlou' Incident Itll~ --~:1t~o:r.cer~;~ J:..l~bB.r.lA --9 ~ril 1948 ~ho object cited in this inciden~ U...Yl.CW9rn to the de scrip- tion of a n in.::truJ~sn:t-<Ja.rryin;: ba.lloo::. In any ca5e~ ~here is m1o~l ~ntor~rat~tlon. Attontion can. be c~l.llod to tho si.:::lilurlty ol' the decorip- tion t; iven h~ro to t"r..ut of incidant ,r81. HEAD~U tLlUE P.S IR )!AI'ERIEL CO Wri~t-Pntterson Air Foroe ~as tnyton~ Ohio SUBJZCTa Proj~ot "SIGN Ai r ?Jenther SerYioe, Andrews Air Force .Base, ~ ~hin~on 25i D. C. AT'l'J12 DSS ttejuo-3/Hn-s/rm. 1. ~oj~ot :-.SIG1~' ia r:,11por:sibla for t}t:J coll otion, 1n7",~1.- t::l.ion nd intflrpr tt\tion of dt.Lt~ rclativo to ul~lr"in~ or unidontli'i"d flyir~ obj~o~s .. A.ttnohod lr.oiclant Su.r;~r1.!l 1 1:h;ru 172 !rom th~ ... 11" ot roJ-'ot SIGN ar~ 'o~ rdcd for ~t~d.r o.~cl r~oom.~nun.tior~.J a.a to 't~lich Of C} ino1d,nt~ m..~y bo 1imir.A~ed \1.'3 b llOC1ll r~l:hL:Sed On .routine ,;rt~optio OO'Ilnts by th.-3 J-.1r flt:Jather S~r'Vio~. .h lt \'7Y .\erolo~loal ~ rvlod or th" Unlted S":at., w, the r BuMau. 1'~ um..'tlflriG:J ttsohed t~ rett11nel1n your hoadquar'-n iJ t or wo:rkln~ .. nd ref r :tzto pu:-pos~a., 2_. ~ Alr rl at}\or J!>rlic \l th~ orly 'l'";"'ll<)~' or !t:J ty th ~ ~k~J to 1 iat in th acooClp:i~hm...,nt of :Pro~"ot SIGJ; xeept U d s~ate TI8athor BuTeau :n~ nro~1d d !~f)r~ tlon on b 11 tghtnln~ R!l ~ rch proj~ot ic ?~hioh b lloon~ 1.\r' ua~d oo 7fh4oh r nf_,ndnot~r\ o r n ponsonHl ey ~ho ,\r;.'!, :rc.~vy o Untt d. ta" 3 A \ r ~ ... :-r) o, 1o' d b / ~h~ nt lligono ., Der rt.o~nt of Co:t ":ld. .h, c heok G t nl4 ly .. d i1 ot fr :n t h o Projeo. SlGll~ or~ 1c"::~ ~!~LU0-3. Th (~ r ~ d1-,t l not t:rO<n t ) oheotc or optic b lloon ~liohtJ t:a-by . , t: he r rv.lc~ at~on3 o: th.,, tlir Fo o tl. :avy ~d the O~?Srt:~:n.t t Gocuner~ (U. 3 . , fe t~r Bur~ -:.1) r q ue .rt d oY ir l:" ~r.er ~.>.:-.rice. opl..1ion of tht olfio -:;h~ t \ :" :'J balloons. po ~i'Jlllty th t ~fllloonJ. B .zV.:C., Chi~i' Air u a h ar Servioo~ Wa hint;ton 25~ D. c. ~ubJj Proj~ot "SlGt~ 4. Th~ form \le!)d 1.::1 in~rro~t1:1g witneaB&l t o a1~htl.ng 1a iL~o d aa a matter or interoet. Co ent t o poss1bl 1o~rov ment !13er.ti~l Elr1a:~nts ()f lnio ra:a.t i on " 1n I"<tgard t o r outii18 3ynopt1o bnllo tliL~te i a 1nv1~d. 5 It l..3 i"f>Q.\!.8 t:t+.ad :tl':at oorre:spondo nce be fo1-warded to ths C~r.mand1ng Gener:al . Hat.dquarte.ro Air Materiel Co:~u:uA.nd, att.6Dtion 2 I nolra, U. R. Cl\nger~n. C~li USAF Colonel, U3J F Chi~f. Intalli~onod D ~t AFO Ul t~ }{q U W"" Co.:>t r ~:.:~sk1. oolr1aio lAb Co lutWJ l lle 1., ll:LNIS AIR Vfr:'-a.A.THER SERVICE Andrews Air Foro ll3Ar.Q r AR!E RS 'i'Oa Co:1"'l.!lndlng Gone:ral., Air Ltaterio l Conr:Alid. 'frrl~ht-Pntter8on Air Perce ila2~) Dayton, Ohio rn~n.:;ti :ntiona by this h'::? dliuurters remol t}":n t a a:rr.optic ":~t t~,:.Jr b lloon <'ould huvo boer. at t he loca.tion wh:~re ei~l-tting:s ~r, ropor~'d ln'the foll~Hinc iroidonta. I n r.ompllin~ this l lnt oonn1<.i(ro.t~.on wno g1:ren to tho wind diro~tton a.r.d ap*'ed at i:h=" _,urro.o~ flnd loft c.t th~ achedulod ti~ or lltt.lloon relda"e and th' location of the near,at -w,.,ath~r a"" tion nvt.king balloon obaer- Lt. Col., US..\.F .\!ljut nt ~ner 1 ca."~i:;t.er )all ( C.:olOiie:!. CEGCK-LIST -U~ !IDEl\:TIFIED FLYI!JG 09JECTS of o bsc r v or ?o ~;or t i3. Inc id Jr..t fr 5. Occupution o f ob 9or vor Pil ot l\.dd r ':::; s of o b s o r vo r of obs~ r vt. t i on UunbJr of' objf'lcts Distance of obj.Jct r r cn obsor vc:r Tine in sic:ht Diroction of f1icht C'.J. o~ d ct,.,ct Jd Appar t constr u cticn E.;:h':lust t r!:\i1s co:~d i t:i ons Eff~c~ e n ~ louds ; S~otch!s o r photc~ruphs 'fl 'YTiiG DISC ~Wt~MMJ n~I!R, lit Aj)Pll 1~4~ ca~u~.'IDoo ~1!RIJ., ATT~I ~ C of S, G-2 rort ~Pherson, '!bird J..rrq, Georgia F.nclosed memo obtained from Col. c~rdine SUBJECT. 1.~ an inter-~.ew by AF SA CIC ( J Anr lf3) /rl A ~ARD ... o:ial ~nt 1n Chal'ge 1\, J Cuh.GfJ~A'~C ';TR!VH'rP.\ r TZrtSGl .\.F9, Dn:"-ml , Chio Al ~:rro\iz .te: Let~eT GSUSA. lD ''1noonventional 1~ t~l ~=-~cnin r"nort -n.s :r dsr~d 1inoe Co lonel T:fndall ~18ld.