Project Sign was the United States Air Force's first official investigation into unidentified flying objects. Established in 1948 at Wright-Patterson Air Force Base, the project examined hundreds of military and civilian UFO reports to determine whether the phenomenon represented a threat to national security.
Project Sign was organized by the Air Technical Intelligence Center (ATIC) at Wright-Patterson Air Force Base following a dramatic increase in UFO reports after the Kenneth Arnold sighting of 1947. Investigators collected military pilot reports, radar incidents, civilian sightings, intelligence reports, and foreign observations. Members of the project reportedly concluded that some cases could not be explained by known aircraft or natural phenomena. The project allegedly produced a classified report known as the 'Estimate of the Situation,' which argued that extraterrestrial craft represented the best explanation for some sightings. Air Force Chief of Staff General Hoyt Vandenberg reportedly rejected the report due to insufficient evidence. Project Sign was dissolved in late 1948 and replaced by the more skeptical Project Grudge.
| Year: | |
| Organization: | United States Air Force |
| Category: | |
| Status: | Completed |
No discussion yet.