Air Force closes Project Grudge and releases the Grudge Report
- When
- Sources
- 3 public sources

The Air Force announced that Project Grudge was closed and released its final report, which attributed saucer reports to misidentification, mild hysteria and hoaxes and recommended cutting the effort back. Grudge continued at a minimal level until Project Blue Book replaced it.
Sources
- OfficialProject Sign, Project Grudge, and Project Blue Book - Air Force UFO Research Programs (includes Project Grudge documents, Air Force Declassification Office) (opens in a new tab)
- FirsthandThe Report on Unidentified Flying Objects (Edward J. Ruppelt, 1956) (opens in a new tab)
- OtherThe Air Force Investigation into UFOs (opens in a new tab)