DOW-UAP-D093, Analysis of Flying Object Incidents in the United States, 1948

The draft said the recurring reported characteristics and observer pool supported the contention that some type of flying object had been seen, without establishing a single origin.

support the contention that some type of flying object has been observed

It listed the Chance Vought XF5U-1, Northrop B-35, and YB-49 as examples of domestic flying-wing aircraft that might resemble some reports.

particularly those described as disks and rough cigar shapes

The analysis considered whether one object type viewed under different conditions could account for disk, ball, and cigar descriptions.

possible that a single type of object may be involved in all sightings

It described concentrations along the Eastern Seaboard and Western Coast but did not treat geographic clustering as establishing an origin.

large concentration of sightings along the Eastern Seaboard

The draft considered whether publicity surrounding Scandinavian ghost rockets and later U.S. reports had psychological or propaganda effects.

strange objects first appeared over the Scandinavian countries in 1946

The report explicitly said it could not determine whether the cases were domestic devices, natural phenomena, or foreign unconventional aircraft.

It is not known at this time whether these phenomena are misidentifications

Richmond Weather Bureau observers reported a metallic disk during pilot-balloon observations, including one reported track at about 25,000 feet; the figures remain historical estimates.

Weather Bureau Station at Richmond, Virginia reported seeing a strange metallic disk

A White Sands report described a disk or sphere moving horizontally at high altitude, while five Portland police officers separately reported disk-like objects.

five Portland, Oregon police officers reported

A Pan American Airways mechanic near Harmon Field reported a circular object and a cloud disturbance, and the draft noted photographs by another employee.

Woodruff, a Pan-American Airways mechanic reported a circular object flying at high velocity

The case compilation included Kenneth Arnold’s 1947 formation report and compared sketches or photographs, but the document did not independently validate the objects depicted.

Kenneth Arnold, while flying near Tacoma, Washington, reported a formation of flying objects

The report described a high-altitude object northeast of Moscow and separately summarized an attempted fighter interception in which a light reportedly outmaneuvered the pursuing aircraft.

The pilot pursued the light which appeared to then take evasive tactics

A report attributed to pilot Combs described an oblong light without wings or exhaust making a tight turn toward the East Coast at an estimated 500–600 mph.

an oblong ball with one light, no wings and no exhaust flame

The radar appendix listed Hokkaido and Fukuoka targets with high estimated speeds; the draft provides no independent calibration or validation of those figures.

an MEW radar at Fukuoka, Japan, picked up a target at 89 miles

A Godman Air Force Base report described a bright silver spherical object at an estimated 30,000–40,000 feet, again based on contemporary observation rather than a confirmed measurement.

visible from the ground at Godman Air Force Base, Kentucky