1947 — KENNETH ARNOLD SIGHTING
MOUNT RAINIER, WASHINGTON · JUNE 24
Civilian pilot Kenneth Arnold reported seeing nine crescent-shaped objects flying in formation near Mount Rainier at an estimated speed of 1,700 mph — three times faster than any known aircraft at the time. Arnold described their motion as "like saucers skipping on water," giving birth to the term "flying saucer." The Air Force Materiel Command wrote in a now-declassified memo: "The report cannot bear even superficial examination, therefore, must be disregarded." This sighting directly triggered the creation of Project Sign.
MILITARY REPORT
DECLASSIFIED
1947 — ROSWELL INCIDENT
LINCOLN COUNTY, NEW MEXICO · JULY 2–8 · 33°57′N 105°18′W
Debris recovered by rancher Mac Brazel near Roswell Army Air Field. On July 8, RAAF public information officer Lt. Walter Haut issued a press release stating a "flying disc" had been recovered. Within 24 hours, the Army retracted the statement, reclassifying the object as a weather balloon. In 1994, a USAF report revealed the debris belonged to a balloon from Project Mogul — a classified program to detect Soviet nuclear tests. The initial announcement, then immediate retraction, remains the foundational moment of UFO cover-up mythology. Records held at the National Archives.
MILITARY
DISPUTED
1952 — WASHINGTON D.C. UFO INCIDENT
RESTRICTED AIRSPACE OVER U.S. CAPITOL · JULY 12–29
Radar operators at Washington National Airport and Andrews AFB tracked multiple unknown objects over restricted Capitol airspace on two consecutive weekends. F-94 interceptors were scrambled. Objects reportedly disappeared when jets approached and reappeared after departure. The Air Force held its largest press conference since World War II — declaring the incidents misidentified temperature inversions. Project Blue Book records confirm the radar returns were real; the explanation remains disputed among radar experts.
RADAR-VISUAL
BLUE BOOK FILE
1953 — ROBERTSON PANEL
CIA CLASSIFIED REVIEW
CIA-organized scientific panel led by physicist H.P. Robertson. Concluded that UFO reports did not constitute a direct national security threat but recommended a systematic public debunking program to reduce mass hysteria. The panel's classified report advocated for "training and debunking" — using media and public figures to ridicule UFO reports. Panel findings remained classified for years and were later criticized as a deliberate suppression strategy.
CIA
DECLASSIFIED
1969 — PROJECT BLUE BOOK CLOSES
WRIGHT-PATTERSON AFB, OHIO · DECEMBER 17
After 17 years, the Air Force closed Project Blue Book following the Condon Committee report, which concluded further scientific investigation was unwarranted. Final count: 12,618 cases investigated. Of these, 701 remain officially "unidentified" — approximately 5.5% of all cases. Full records were transferred to the National Archives in Washington D.C. in 1976 and are publicly accessible. No finding of extraterrestrial origin was officially confirmed.
NATIONAL ARCHIVES
RECORD PUBLIC
1980 — RENDLESHAM FOREST
RAF WOODBRIDGE, SUFFOLK, UK · DEC. 26–28 · USAF PERSONNEL
U.S. Air Force personnel stationed at RAF Woodbridge reported a structured metallic, triangular object landing near Rendlesham Forest over multiple nights. Deputy base commander Lt. Col. Charles Halt documented the incident in an official memorandum — later released under FOIA — including measured radiation readings above background levels and physical impressions in the soil. Halt's memo was sent to the UK Ministry of Defence. Official explanations cited the Orfordness Lighthouse and bright stars. Halt publicly disputed this explanation until his death.
USAF MEMO (FOIA)
UNRESOLVED
1986 — JAL FLIGHT 1628
OVER ALASKA · NOVEMBER 17
Japan Air Lines cargo flight tracked by FAA radar alongside an unidentified object for 31 minutes over Alaskan airspace. Capt. Kenjyu Terauchi reported a massive craft the size of "two aircraft carriers" that paced the 747. FAA Division Chief John Callahan confirmed the radar data to a NASA briefing — and stated he was subsequently told by CIA officials to keep it secret. FAA radar tapes were confiscated. Callahan later testified under oath about the incident.
FAA RADAR
CALLAHAN TESTIMONY
1997 — PHOENIX LIGHTS
PHOENIX, ARIZONA · MARCH 13 · MASS SIGHTING
Thousands of witnesses across a 300-mile corridor from Henderson, Nevada to Tucson, Arizona reported a massive V-shaped formation of lights travelling silently across the night sky. Governor Fife Symington initially ridiculed the sightings at a press conference — then admitted years later he had personally witnessed the object and described it as "otherworldly." The U.S. Air Force attributed the lights to flares dropped by A-10 aircraft from the Maryland Air National Guard. Witnesses disputed the explanation, noting the formation appeared before the flares and moved at extremely low altitude without sound.
UNRESOLVED
MASS SIGHTING
2004 — USS NIMITZ / TIC-TAC
OFF SAN DIEGO COAST, CALIFORNIA · NOVEMBER 14 · 32°N 117°W (APPROX.)
During two weeks in November 2004, the USS Nimitz Carrier Strike Group's advanced radar systems tracked unknown objects off Southern California. On Nov. 14, Cmdr. David Fravor, commanding the "Black Aces" (VFA-41) in an F/A-18 Hornet, was sent to intercept. He observed a white, oblong, 40-foot object — no wings, no exhaust — hovering at ~50 feet above churning water, then rapidly ascending and departing at speeds no aircraft can match. The encounter was recorded via FLIR infrared camera by a subsequent crew. The video (FLIR1) was classified, then released publicly in December 2017 alongside GIMBAL and GO FAST footage. The DoD confirmed all three videos authentic. AATIP's existence — previously denied — was simultaneously revealed by the New York Times. The object officially remains unidentified.
MULTI-SENSOR
DOD CONFIRMED
UNRESOLVED
2014–2015 — USS ROOSEVELT INCIDENTS
ATLANTIC OCEAN, EAST COAST · USS THEODORE ROOSEVELT
Navy pilots operating off the USS Theodore Roosevelt reported daily UAP encounters over the U.S. East Coast training ranges. Two videos — GIMBAL (showing an object rotating against airflow) and GO FAST (showing a low-altitude object moving faster than expected) — were recorded by F/A-18 FLIR systems. Both were released by the Pentagon in 2017. Pilot Lt. Ryan Graves stated the objects appeared "every day for at least a couple years" and that near-collisions were reported. Graves later testified before Congress in July 2023.
FLIR VIDEO
PENTAGON CONFIRMED
2017 — AATIP DISCLOSURE
NEW YORK TIMES · DECEMBER 16 · FIRST MAJOR LEAK
The New York Times published a front-page investigation revealing the existence of the Advanced Aerospace Threat Identification Program (AATIP) — a classified DoD program the Pentagon had denied existed. The program ran from 2007–2017 with a $22 million budget (less than 0.004% of the total DoD budget) secured by Sen. Harry Reid. Former director Luis Elizondo had resigned weeks earlier in protest over secrecy and lack of resources. The article included the first public release of the FLIR1, GIMBAL, and GO FAST videos, triggering a chain of events leading to congressional hearings.
NYT LEAK
ELIZONDO RESIGN
2021 — UAPTF PRELIMINARY ASSESSMENT
DoD / ODNI REPORT · JUNE 25
The UAP Task Force submitted the first congressionally mandated report on UAPs. Of 144 cases examined between 2004 and 2021, only one was identified (a deflating balloon). The remaining 143 could not be explained. The report acknowledged five possible explanatory categories, including "other" — a category left deliberately open. The report noted potential national security implications and recommended further investigation. This document formalized official acknowledgement that UAPs represent a genuine unknown.
CONGRESSIONALLY MANDATED
143 UNRESOLVED
2022 — AARO ESTABLISHED
DoD / ODNI · JULY 15
The All-domain Anomaly Resolution Office (AARO) replaced the UAPTF as the primary UAP investigation body. First multi-domain mandate — air, sea, space, and ground. First director: Dr. Sean Kirkpatrick. AARO published its first historical review in 2024, finding no verifiable evidence of extraterrestrial origin in any case reviewed — while also documenting over 800 unresolved cases in its active database.
ACTIVE
2023 — CONGRESSIONAL HEARING / GRUSCH TESTIMONY
HOUSE OVERSIGHT COMMITTEE · JULY 26
Former DoD intelligence official David Grusch testified under oath before the House Oversight Subcommittee that the U.S. government operates a secret non-human intelligence retrieval and reverse-engineering program, and that individuals had been harmed — or killed — to protect its secrecy. Grusch's claims have not been independently verified. Also testifying: Cmdr. David Fravor (USS Nimitz) and Lt. Ryan Graves (USS Roosevelt). AARO filed 757 UAP reports in 2023 alone — a record.
SWORN TESTIMONY
UNVERIFIED
2026 — PURSUE: MASS DECLASSIFICATION
WAR.GOV/UFO/ · MAY 8, 2026 — ONGOING
Following a February 2026 presidential directive, the DoD launched PURSUE (Presidential Unsealing and Reporting System for UAP Encounters) — the first centralized public portal for declassified UFO/UAP records. The first release on May 8, 2026 included reports, photographs, videos, military records, and astronaut transcripts spanning 1944 to the present. A second batch of 60+ files was released May 22, including USAF National Guard footage of an object shot down over Lake Huron (Feb. 12, 2023) and UAP formation footage over the Persian Gulf (Oct. 2019). Secretary of Defense Pete Hegseth stated: "These files, hidden behind classifications, have long fueled justified speculation." Files continue to be released on a rolling basis.
ACTIVE RELEASE
PUBLIC: WAR.GOV/UFO