Program
Project Blue Book
US Air Force UAP investigation program, 1952-1969, succeeding Project Grudge (1949-1951) and Project Sign (1947-1949). Investigated approximately 12,618 cases; adjudicated the majority to conventional explanations. Terminated based partly on the 1968 Condon Report. Foundational archive for later CIA and USAF UAP methodology.
Also known as: Blue Book
11 cases in the archive
- DOD · 2026-07-20 · unresolvedAARO FY2025 Consolidated Annual Report
AARO's FY2025 Consolidated Annual Report on Unidentified Anomalous Phenomena, published July 20, 2026. 319 new UAP cases logged in the reporting period. Delivered months past the statutory deadline.
- DOD · 2026-07-10 · unresolvedPURSUE Release 04, fourth tranche
Fourth tranche of declassified UAP records released through the PURSUE portal: 14 documents, 19 videos, 4 audio recordings, and 3 images sourced from the Department of War, NASA, CIA, FBI, and the Dep...
- FBI · 2021-11-01 · unresolvedFBI Northeastern Orb video collection
Set of FBI-held eyewitness video files spanning November 2021 through July 2025, depicting bright orb-like objects in the Northeastern US. Released June 12, 2026 as part of PURSUE Release 03. The firs...
- DOD · 1980-12-29 · contestedCash-Landrum Incident
Vickie Landrum, Colby Landrum, and Betty Cash reported observing a diamond-shaped object discharging flame over a roadway near Houston, Texas, accompanied by what they described as approximately 23 he...
- DOD · 1964-04-24 · contestedLonnie Zamora, Socorro Landing
New Mexico State Police officer Lonnie Zamora reported observing an egg-shaped object on the ground with two small humanoid figures nearby. The object reportedly took off vertically as Zamora approach...
- DOD · 1957-07-17 · unresolvedRB-47 Multi-Sensor Encounter
An RB-47 reconnaissance aircraft of the U.S. Air Force reported a coordinated multi-sensor encounter with an unidentified object during a training mission across the southern United States. Detection ...
- OTHER · 1954-08-01 · explainedCIA U-2 and OXCART programs, UAP explanatory record
Declassified CIA institutional history covering the U-2 (1954-onwards) and A-12 OXCART (1962-onwards) programs, including the agency's accounting of how these programs' high-altitude flights generated...
- OTHER · 1953-01-14 · explainedCIA Robertson Panel report
Report of the CIA-convened Scientific Advisory Panel on Unidentified Flying Objects, chaired by physicist H.P. Robertson, January 1953. The founding document of the US government's official skeptical ...
- DOD · 1948-12-14 · explainedProject Sign progress report
Progress report of Project Sign, the US Air Force's first formal investigation into unidentified aerial phenomena. Dated December 1948. Released through PURSUE Release 04 on July 10, 2026 as DOW-UAP-D...
- DOD · 1948-01-07 · explainedMantell Incident
Captain Thomas F. Mantell, a Kentucky Air National Guard pilot, died after his F-51 Mustang crashed during a high-altitude pursuit of an unidentified object reported by Godman Field tower personnel an...
- OTHER · 1947-06-24 · contestedKenneth Arnold Sighting
Civilian pilot Kenneth Arnold reported observing nine bright crescent-shaped objects flying near Mount Rainier in Washington state at unusually high speed. His description gave rise to the term 'flyin...