Edward J. Ruppelt’s Report on Unidentified Flying Objects is one of the most important firsthand accounts in the history of UFO investigation. Written by the former head of the United States Air Force’s Project Blue Book, it takes readers behind the official reports, military briefings, radar records, pilot encounters, and government debates that shaped the modern flying-saucer mystery.

Ruppelt was not an outsider, conspiracy theorist, or sensational journalist. As an Air Force intelligence officer, he was responsible for examining extraordinary reports submitted by military personnel, commercial pilots, scientists, radar operators, and ordinary citizens. His task was to separate hoaxes, mistakes, astronomical phenomena, secret aircraft, and psychological effects from sightings that resisted conventional explanation. The book traces the official investigation from the confusion following the first great wave of reports in 1947 through Project Sign, Project Grudge, and the creation of Project Blue Book. Ruppelt recounts famous cases involving strange lights over Lubbock, unidentified objects tracked near Washington, unusual activity around sensitive military and atomic installations, and encounters witnessed by trained observers.

Throughout the report, he maintains a disciplined and often skeptical approach. Many sightings receive rational explanations, while others remain genuinely unresolved. He also reveals disagreements within the military over whether some objects might represent technology originating beyond Earth.