Topic: Project Grudge

Project Sign, based at Wright-Patterson Air Base, initially concluded in 1948 that UFOs were likely interplanetary craft. General Hoyt Vandenberg rejected this conclusion to avoid public panic, leading to the destruction of the report and the eventual creation of Project Grudge. Grudge was mandated to explain away sightings, often using psychological explanations or misidentifications of stars and planets to dismiss reports of advanced propulsion systems.