Documented UAP incidents from 1947 to the present — primary source analysis of the most significant cases on record.
In July 1952, UFOs flew over the US Capitol for two consecutive weekends, tracked on radar at National Airport and Andrews AFB, intercepted by USAF jets, and acknowledged in a record-setting press conference. The complete record.
The 2004 USS Nimitz Carrier Strike Group encounters — what was tracked, what was filmed, who saw it, and what the Navy finally confirmed. The most documented UAP case in American history.
On April 12, 2026 NUFORC received a report from a retired US Air Force radar maintenance technician about a high-speed radar return — approximately 5,000 mph — tracked by the 780th Radar Squadron at Fortuna AFS in spring 1967. The next day a team from Malmstrom AFB arrived and told all witnesses they didn’t see anything. The site operated the AN/FPS-35, a 128-foot search radar dish on the SAGE network. The case coincides precisely with Malmstrom and Minot missile silo shutdowns.
MUFON’s 2026 Symposium runs August 27–30 at the Northern Kentucky Convention Center in Covington, KY. Saturday keynote: Alex Dietrich — the female Nimitz pilot — presenting ‘The Nimitz Encounter: A Pilot’s Case for Evidence-Based UAP Investigation.’ Also speaking: Clas Svahn (AFU Sweden), Raymond Szymanski (‘Swamp Gas Exposed’), Katie Paige (Roswell Body/Denver Mortuary cover-up), and Richard W. Beckwith (‘The Hidden Mechanisms of UFO Secrecy’).
The National Archives holds moving images and sound recordings related to UAP across nine record groups and collections. Among them: RG 263 (Central Intelligence Agency) contains CIA-produced moving images related to UAP. RG 111 includes Major General John A. Samford’s 1952 press conference addressing the Washington DC overflights — the largest US Air Force press conference since WWII. These are online and downloadable.
On July 19–20 and July 26–27, 1952, unidentified objects were tracked over Washington DC on multiple independent radar systems simultaneously, including at Andrews AFB and Washington National Airport. The events triggered a presidential press conference and became one of the Robertson Panel’s key case reviews. CIA documents on the overflights are in the FOIA collection.
In January 1953 the CIA convened a secret Scientific Advisory Panel on UFOs. Its public conclusion was that no national security threat existed. Its classified recommendation was a systematic debunking campaign using mass media, television, and civilian organisations to reduce public interest. This recommendation shaped US government UFO policy for decades. The full Robertson Panel report is now public.
In January 1953 the CIA convened a five-day scientific panel to review US UFO evidence. The Robertson Panel, named after physicist H.P. Robertson, concluded that UAP reports posed no direct threat but that the public reporting phenomenon was a national security liability. Its recommendation: systematic debunking. That recommendation became US policy for the next two decades.
CRIDOVNI has operated under the Uruguayan Air Force since 1979. In 47 years it has processed thousands of UAP reports, documented notable cases including the 1986 Colonia incident, and published investigation findings publicly. Colonel Ariel Sánchez gave international presentations on CRIDOVNI’s work. Uruguay’s programme predates AARO by 43 years and most European equivalents.
In 1977 the Brazilian Air Force investigated mass UAP encounters in Colares, Para state. Civilians reported beams from unknown craft causing burns, anaemia, and puncture wounds. Captain Hollanda’s team spent months there. The files were classified. Hollanda broke his silence in 1997 before dying. Brazil’s Arquivo Nacional now holds the records.
Uruguay’s Fuerza Aérea (Air Force) established CRIDOVNI — the Comisión Receptora e Investigadora de Denuncias de Objetos Volantes No Identificados — in 1979. It is one of the oldest continuously operating official military UAP investigation bodies in the world. Reports are submitted to the Air Force, investigated, and where unexplained, published. Uruguay’s FAU website is currently under update.
In 1977–1978 the Brazilian Air Force secretly deployed a military investigation team to Colarés island in the Amazon. Residents were reporting being struck by beams of light from aerial objects, suffering burns and radiation-like injuries. The investigation produced thousands of documents, hundreds of photographs, and hours of film. It was immediately classified. Some files are now public.
Chile has been officially investigating UAP since July 9, 1968, when Colonel Sergio Bravo Flores sent the first circular to 43 aeronautical installations requesting reports. That programme evolved through two name changes and now operates as SEFAA under the DGAC. Chile’s UAP investigation record is longer than any currently active national programme except France’s GEIPAN.
Chile’s SEFAA — Sección de Estudios de Fenómenos Aéreos Anómalos — operates under the DGAC civil aviation authority and monitors 32 million square kilometres of airspace from Arica to the South Pole. Chile’s official UAP investigation programme began in 1968 under Coronel Sergio Bravo. Case numbers have now passed 2,229. Monthly case reports are published at sefaa.dgac.gob.cl.
While the US classified its UAP files for decades, Scandinavia was building archives. The Danish Air Force published 329 pages of UAP records in 2009. Sweden’s AFU has operated since 1973 as the world’s most comprehensive private UAP archive. Norway ran Project Blue Book-equivalent investigations independently. The Nordic transparency model predates PURSUE by decades.
In 1978, following a wave of Italian UAP sightings, Prime Minister Giulio Andreotti formally designated the Aeronautica Militare as the institutional body responsible for collecting, verifying and monitoring OVNI reports. The programme is still running. Annual reports are published for every year from 2009 through 2025.
In 1991, Spain’s Ministry of Defence decided to begin declassifying its Air Force UAP records. No pressure from NATO. No congressional mandate. No public scandal forcing the issue. Spain simply decided that documents classified as ‘strange phenomena sightings’ no longer needed to be secret. The files were deposited in the Air Force library in 1992. They are online today.
France has operated a continuous, state-funded UAP investigation body since 1977. GEIPAN — run under CNES, the French space agency — has processed 9,897 testimonies over 49 years, publishes all investigated cases online, and classifies phenomena using a rigorous A/B/C/D system. It is the most transparent national UAP programme in the world.
New military encounters with Tic Tac-shaped UAP are matching the characteristics of the 2004 Nimitz incident — white oblong craft, no visible propulsion, rapid acceleration, no heat signature. The pattern has not stopped. It has continued for over 20 years.
In 1952, during the famous Washington DC UFO wave, a Navy officer reportedly recovered a fragment from a downed UAP near the capital. The fragment was sent to Canadian engineer Wilbert Smith, analyzed by the Bureau of Standards, and found to be of unknown composition. AARO’s own historical report references the incident.
