PROJECT 10073 RECORD DATI Ta.:' GIIC!JIIl 2. Lt' 'TIOH , Mllrc:h ~ Sioux cit,y, IO'..m Ito COUCLUSION Civil~ an Co NUMIIR Oft oaJICTS fn"at.lo c.,t.lon, 0:10 eb~o.-wr t.hcuj'\t obje~ a ~lloOD. and n!!:ht in QCCO.; ~t.h thiD OV.ll~tic."\ S. LENGTH Oft OISIRVATION IRIIfl SUMMARY AND ANALYSIS 10 J.anutea 81l.ar epoek ~boervcd tbr~h tiold ela=soa while obcorvera ~cr. watc.'li.l1,l coo:Jo. C'.;,joct nou ~ quo.ro p:.t.t.orn over tho city boio~ 6. TYIIIE Oft OBSERVATION clia:LppUrifta 1n tho ~!3':1 into bn~o.O'.;,servera woro to thoSS:l o! th: Ground-Viaual olty. Do=cr1pt.1on ot tho objoct. b7 the t.hrco wit.ftooa t:<.lS contll~ h1.:h 20,COO tt.. S.~pe slcr.dor, ro\lnd one roportccl wi" nunt. ~ O.w th~ht might bo a \loather b3.lloon. Size Gt.C8 a plaM at t.bD.t altitw1o. Color aUver or metalllc aboen. Spoecl I. IIIHOTOI alw, benrinc t. IIIHYIICAL EVIDINCI tbeD ..-\ \o aoutb .. at" aouare pat.tem 1-t~tcM&t: Mnkina . ar FOIM tU-PAilT 1 AIR INTEl.LIGNCE INFORMA Unidontitied Flyinr. Obj~ct u April 1950 A. G. Lon, let Lt, U~.\ P' "U ,.,. lntellfr onco. rJ1vE1cr' ~ .lVi h-.T..; Mdrevtll AI ~oe, ~.aa~hinrtc.:n ;5, D. !.:. Re~rt contnina intorr~tlon on aeven alleped si~htin;.~ or u~icentificd fiy~nr. object .. torwnrderl b7 ftl'loua l ' .. TS nit'.ht 3ervice Centor units. The ai~:rt-inpa "re all in the US and occurred c!ur1.nr, L:z,.rch 1?50. Arl I~V.:O: Lt Colonol, US .. r Chi~f, Intelli?once Div.i.~ion 'II 0 I tf I o