Documents / Report
This 10 December 1948 intelligence analysis, marked declassified, examines about 210 reported flying object incidents in the United States. It sorts the reports into disk-shaped objects, cigar-shaped objects and balls of fire, and weighs domestic misidentification against a possible Soviet origin, with particular attention to German flying-wing designs. It concludes that some type of flying object has been observed but that its identification and origin cannot be determined. Appendices plot the sightings, give selected incident reports and describe flying-wing aircraft.
From the source: Release of 2026-07-10 Incident: 12/10/48, Virginia. This file contains a U.S. Air Force (USAF) Air Intelligence Division study, “Analysis of Flying Object Incidents in the United States,” Study No. 203, dated 12/10/1948. The analysis includes an assessment of various reported unidentified flying object (UFO) incidents and theories to account for their nature and origin. Overall, the study assesses that “it appears that some object has been seen; however, the identification of that object cannot be readily accomplished.” The study offers that two “reasonable” origins might account for the phenomena: technologies of a domestic or foreign origin. It also suggests that, if foreign, it is prudent for the United States to assume that UFO observations are attributable to scientific, military, or intelligence activities of the Soviet Union, and, in that case, to take seriously the threat such objects may pose. The file also contains contemporary UFO reports and examples of experimental “flying wing” type aircraft planforms that might account for certain commonly reported UFO characteristics. AARO Comment: This file appears to be an earlier draft version of the file contained in DOW-UAP-D094, whose content is substantively similar.
> might be further roduced wi the follow~ conoideratione i n mind: Silver disks or balls have, or the greater part, been observed in daylight nnd a number under lear weather conditions with visibility unlit1i~edt In aost instanc a. balla of fire have been oboerved at night. Oie;ar. or pencil-sh od objects have been aig~tod in fe\fer nwnbers but ~,ith about equa distribution in daylight and at nieht. A few accounts toll of ·eks havil'.l,f; u rough eigar- ahapo whon viewed vh1lo maneuvering. me of the dioka are described no having lw:ninoa1t7 in daylight. hereforo is poseible that e sin&lo type of object J11a1 be involved i cightinga. and diffo~onceo in dee cription n1A7 reault from vi ng tho objects at variouo ~lee and under diftoring conditiona vieib1lit1. Tho n.boTo indicate that some type object h:l.e been oeen and tho poseibil ity t tho object or obJecta aeen aro conven- tional domestic deviceG , ru e.a we&thor balloons, test rockets, or Jet equ.ipped aircraft with pane or flyi~ will£ oonfigur~tiona. The nos1ibility e ate that the reportiJ:I& of f~ill8 objects may have rliar reports on similar inoidente in Soondino.via. and OllXltral Ilur The publication in newaq>npera of de tails on auch incidents. bo foreign and dom~atic. 1187 hove induced eo~o of the description pro ded in reported domeatic inoidenta. However, one of the enrlieot reporte 1ightiD4t~ in thou.a. wae the one obaencd by U.S. Weather Dureau per1 el in April 1947, at lliobmon,, \irginia. and on \hG baei• ot report lt appears that the diek• are not bulloonn. It vould aeem \ thin aighttng w•• not lnflueno~d by the re- port• of forGt n 1nc1dontm, be nev~Bfer aooou.nte of domoetic lnoidente, - nor by mieldentiflcation of conTcntional object. Altho~h reported mestie 1noidonte are l.1id.oly aoetterod through out the u.s., fregy.ency of ,;htl:ng a.nd n'U.lllber of obeervors per sighUue;
Report, from the pursue collection. The PDF is mirrored here; the original link is above. 67 pages are in the text index: search them above, or from the library's search.