Government1948

Air Intelligence Report 100-203-79 on flying object incidents

When: 10 Dec 1948
Where: The Pentagon
Sources: 2 public sources

A Top Secret Air Force and Navy intelligence study reviewed about 210 sighting reports. It found something was being seen but its nature was unknown, and said that if the objects were foreign, a Soviet source would be most logical. Copies survived a 1950 order to destroy it.

Sources

OfficialThe Somewhat Lost Top Secret 1948 UFO Report (with scan of Analysis of Flying Object Incidents in the U.S.) (opens in a new tab)U.S. Air Force Directorate of Intelligence (copy hosted by The Black Vault) / 2024-02-21
OtherAir Intelligence Report No. 100-203-79, Analysis of Flying Object Incidents in the U.S. (transcription) (opens in a new tab)Project 1947

How sources are chosen and tiered

Where it fits

Earlier in GovernmentProject Sign 'Estimate of the Situation' rejected by VandenbergSep 1948 Later in GovernmentRAND's James Lipp letter on the spaceship hypothesis13 Dec 1948

See it on the timeline More in Government