Cockpit/sensor footage from the February 12, 2023 U.S. Air National Guard F-16C engagement over Lake Huron, Michigan — the third of four shootdowns that month in the wake of the Chinese surveillance-balloon incident. AARO has characterized the underlying object as 'a benign hobbyist or research balloon' but the engagement footage itself is published for the first time in PURSUE Release 02.
U.S. Air Force security personnel stationed at the twin Royal Air Force bases of Bentwaters and Woodbridge report a triangular, metallic craft on the ground in adjacent Rendlesham Forest, followed by aerial light phenomena two nights later. The deputy base commander signs a memorandum to the U.K. Ministry of Defence summarizing the events.
Three-volume Air Force Office of Special Investigations dossier (Box 7) containing 233 incident summary reports from 1955. Released by the Department of War as part of PURSUE Release 01.
Across two consecutive weekends, multiple radar installations and visual observers track unidentified objects above the restricted airspace surrounding the U.S. Capitol and White House. The Air Force convenes its largest press conference since World War II to address the events.
On July 2, 1952, Navy Chief Warrant Officer Delbert C. Newhouse — a Photographer's Mate with more than 1,000 hours of aerial-photography experience — filmed 12 to 14 bright, reflective objects near Tremonton, Utah, on 16mm Kodachrome. The Air Force assessed him as honest, reliable and expert, and never conclusively identified the objects: birds, balloons and mirage early on; 'pillow balloons' after a December 1952 review with General Mills; seabirds reflecting sunlight in later assessments. PURSUE Release 06 publishes the National Archives digitization of the film, the Blue Book case file, the balloon photo file, Newhouse's personnel record, and the Air Force's late-1952 'Flying Discs' compilation.
Three months before the Washington, D.C. flap, the head of the Air Force's reorganised UFO investigation told a Boston audience that roughly 20 percent of about 800 historical cases remained unexplained after technical analysis, that reports concentrated around Los Alamos, Albuquerque and Oak Ridge, and that radar had logged unconfirmed speeds between 1,000 and 3,500 miles per hour. PURSUE Release 06 publishes the transcript and a 65-minute audio recording of the presentation.
Air Force Office of Special Investigations file box 186, folder 319.1 'Flying Discs' — 143 pages of 1949-era investigative material. One of the earliest organized USAF UAP file holdings.
A 116-page joint file from the U.S. Air Force and the Armed Forces Special Weapons Program — the Manhattan Project's nuclear-weapons custodial successor — documenting 209 sightings of 'green orbs,' discs, and fireballs maneuvering near the Sandia, New Mexico custodial nuclear-weapons installation between 1948 and 1950. Released in full as part of PURSUE Release 02; some sighting locations contained recovered copper powder.
Kentucky Air National Guard pilot Capt. Thomas Mantell is killed when his P-51 Mustang crashes during the pursuit of a large, slow-moving object reported above Godman Field. The Air Force eventually attributes the object to a Skyhook research balloon.
PURSUE Release 04 publishes six U.S. Air Force files tracing the government's institutional handling of UFO reports from 1948 to 1967. The centerpiece is Project Sign's first progress report on 100 sightings from 1947-48, alongside both surviving drafts of Air Intelligence Division Study No. 203. Rounding out the file: records of the Avro 'Project Y2' saucer-shaped-aircraft assessments, 1955 correspondence relating to Project Blue Book, and the 1966-67 Scientific Advisory Board review that led directly to the Condon Committee and, eventually, Blue Book's closure.
The Roswell Army Air Field public information officer issues a press release stating that the 509th Bomb Group has come into possession of a 'flying disc' recovered from a nearby ranch. Within twenty-four hours the Army retracts the statement and identifies the debris as a weather balloon.
Air Materiel Command and Army Air Forces general files covering 1946–1948 UFO investigations conducted before Project Blue Book's formal establishment. Includes the Maury Island and Roswell-era investigative correspondence.