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.
. ' 'asouoes a definable pattern." There is a large concentration of aight inga along the ~stern Seaboard. another large concentration throU(;h out the 1t'ostern Coast states, and a . few sightiru?s- '-n the Mi ddle ,1est. Distribution of incidonts by configuration of object snd description of maneuverability is approximately equal in each of theoo araaa and this i o believed to further 'substanti ate the possibility tbet one type of object mieht have been observed in different asneots of fl i €ht. If sightings are induced by rumor, it seeca unusU£>1 t.lult more incidenta have not been reported from tho vreas with hi€h concentra- t 1on of population. Reports from such areas would also hnve creater facility in channel1IJG either to newspapers or official reporting ngon clee. For the most part , _o1ght1J1€;s have b~en made 1n fairly onen country where there are few ro,trictione to vhibilit7, .·~-hich may indicate that . obstructod vision hn.o reduced oightingo in bu11,-up aroas. It thorofore Geems th.at aome type of flying objoct has been ob served; tho identification of ita origin requires tho co~!pletion of other 3. Eoaa1blo Or1«1~ of UnuoU4l J'lrlns Objnpt1& Provided, upon the completion of annlyaeB, it 1c inrlicated that nome or nll of the reported flyill8 objects over the U.S. nro of foreign or1&in, the objectc could from a logical viewpoint, be couaidered Soviet. It is evident from the perforaance character1et1oe attributed to the un1dnntified objectn at thiu time that 1f they are foreign, the1 involve efficiencies of por formanoe which hnve not been ro&liz•d in nn~ op~rat1ollt\l airborne de vice in thie country. It would, therefo•e, be o. rnietake to analyae the technical n,weets of the situation within th• limtt, of our cwn knowl edge of p~actinnl dcvelopmentn. It is more deeirable to consider then the 0\1ter llmiti, of poealble Soviet develop11entfl and objecti1.ve11 in nt• tEJmptlng to !c,rmul&.te aom idea of the tectic" whioh might be involved.
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.