What did the declassified documents reveal?

1947 06 9668718 Spokane Washington. This document, released by The Black Vault, is a report from the Air Materiel Command, dated June 1947. It's notable for detailing a series of unidentified flying object sightings in Spokane, Washington. The document was released through The Black Vault's efforts, and the canonical PDF is available online. PROJECT 10073 RECORD fr DATE - TIME GROUP i |. SOURCE 10. CONCLUSION | ' 4. NUMBER OF OBJECTS 5. LENGTH OF OBSERVATION i}. IEF SUMMARY AND ANALYSIS 7, COURSE i i PHOTOS i O Yes i | fNo 19. PHYSICAL EVIDENCE L No SO A = ne ee NE ee a ee eS ee FTD sep 63 0-329 (TDE) previous editions of this form may be used, e- Spokane, Wasnin:ton <= 21 oxrlanatione 9 information siven is too limited to interpretation. It would 22, howevor, tnat the sibly have been # series of talloons. é svavea i vution Spokane, Washington in ground one at first. later others more indistinct ; to the west of south yas it moved along ian ty Lasher CincG HUD taasnea ) ECIAXO HEADQUARTERS AIR MATERIEL COMMAND Frirht-Pettereon Air Poroe Bore mye Chictl, 423 Yreather Servive Andrews Air Force Barc, Wathington 25, D. C. ATT: DSS 1. Project "SIGN" is responsible for the collestion, investi- getion end interpretation of duta relative to sighting of unidentified flyirg objeote. Attached Incident Summerise 1 thru 172 from the files of Project “SIGN” are forwarded for study and recommendations ae to which of the ineidents may be elinimted ae balloons released on routine eynoptio ascents by the Air Weather Service, the Kevy Asrological Service or the United Stetes Weather Bureau. The Air Weather Service ie the only arenoy of its hee bsen eeked to avelat in the ecoomplishment of Project thet the United States Veathor Bureau has provided information on ball lightning. Research projects in which balloons are used end whioh are conducted or sponsored by the Army, Kevy or United Stntes Air Foroe nre checked by the Intelligences Department of thie Conmnd. These cheoke ereususlly made direct from the Projeot “SIGH” Office, MCL cheske are distinot from the cheok of synoptic balloon flir mede by weather service stations of the ‘Air Force, the Navy and the Departasnt ef Commerce, (Ue S..Weather Bureen) requested of Air Werther fervice. wxcept aaa %, It de the opinion of this cffice. thet the below listed inoi- dents are those having the greatest possibility of being belloonr. list does not elimimte the possibility thet many of the remeinin; This insidente are balloons. 2 el 59 91 123 155 3 25 52 92 115 156 h 2 72 9 e157 21 50 73 10l, wy 15 pa 3h a 105 iLs 163 ; 16 32 87 107,&,9 151 167 , 2e 33 9 112 (Seel22) 154 169 23 «hf ett ct TELE Ah, 4 in interrogeting witnecser to interect. Comment es to possib nts of Informtion" in regard “6 ie invited. Se recuerted thet correrpondence be forwarded to t! Conmanning Generel, Keecgurters, Air Weveriel Command, ettention MOIAXO@3. OR THE COMSIANDING GZNERAL: We. R. Clingerman, Col; USAF 5 e Imiles Wd. Ee MoCOY Summaries…

Why was this case declassified?

This material was released by the Central Intelligence Agency (CIA) through the U.S. declassification and Freedom of Information Act (FOIA) process. The originating source document is linked on this page so the citation chain is auditable.

Declassified CIA File

Q: Why was this case declassified?

This material was released by the Central Intelligence Agency (CIA) through the U.S. declassification and Freedom of Information Act (FOIA) process. The originating source document is linked on this page so the citation chain is auditable.

◆ BLUF — The short version

1947 06 9668718 Spokane Washington. This document, released by The Black Vault, is a report from the Air Materiel Command, dated June 1947. It's notable for detailing a series of unidentified flying object sightings in Spokane, Washington. The document was released through The Black Vault's efforts, and the canonical PDF is available online.

Agency: Central Intelligence Agency (CIA)
Date: JUL 18 · 2026
Release: Declassified · U.S. public record (FOIA)
Source document: View the primary source document

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What was Declassified CIA File about?: 1947 06 9668718 Spokane Washington. This document, released by The Black Vault, is a report from the Air Materiel Command, dated June 1947. It's notable for detailing a series of unidentified flying object sightings in Spokane, Washington. The document was released through The Black Vault's efforts, and the canonical PDF is available online.
Why was this case declassified?: This material was released by the Central Intelligence Agency (CIA) through the U.S. declassification and Freedom of Information Act (FOIA) process. The originating source document is linked in the case notes above so the citation chain is fully auditable.

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