Project Sign Report
Summary
This 1949 report from the U.S. Air Force documents Project Sign, the first official study of UFOs conducted by the USAF. It outlines the findings and conclusions of the investigation into unidentified aerial phenomena, serving as a precursor to subsequent projects like Project Grudge and Project Blue Book.
Key highlights
The report summarizes data from 2,435 domestic and 30 foreign incidents.p.7
“The results of the study reviewed in this report are based on data derived from reports of 2435 domestic and thirty (30) foreign incidents.”
Project Sign was initiated to evaluate unidentified flying objects.p.5
“Project "Sign" was initiated by the Technical Intelligence Division, Air Materiel Command.”
Approximately 70% of incidents have been identified as conventional aerial objects.p.7
“Approximately sat percent of the incidents Have been identified as conventional arial objects.”
The report states that no conclusive evidence exists for the existence of unidentified objects.p.10
“No definite and conclusive evidence is yet available that would prove or disprove the existence of these unidentified, objects.”
Psychological factors, such as 'vertigo', may explain some sightings.p.12
“A psychological analysis of the reported data is being prepared by Aero-Medical Laboratory.”
Outliers
The report mentions the possibility of advanced technology beyond current knowledge.p.8
“The possibility that some of the incidents may represent technical developments far in advance of knowledg* available to engineers.”
Source
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