On September 1, 2015, an unidentified object intruded the restricted airspace above the Pantex Plant near Amarillo, Texas — the facility where the United States assembles and disassembles its nuclear weapons. Ground-surveillance-radar imagery and an incident report were first released, heavily redacted, as part of PURSUE Release 02 in May 2026. PURSUE Release 04 republishes the same file, DOE-UAP-D005, with far fewer redactions.
An F/A-18F crew from the USS Theodore Roosevelt's air wing records an infrared object with no visible exhaust that appears to rotate in flight while the crew reports a formation of additional objects on their situational-awareness display. One of three videos the Pentagon officially confirmed authentic in April 2020 — and the only one of the three with no published resolution.
Dozens of residents around Stephenville, Texas, report large, fast-moving, brightly lit objects in the night sky. A subsequent FOIA release of FAA radar data confirms anomalous tracks consistent with witness reports.
Aircrews from the USS Nimitz Carrier Strike Group report repeated radar contacts and a daylight visual encounter with a small, white, smooth, Tic Tac–shaped object during a training exercise in the Pacific. One of three Pentagon videos later released by the Department of Defense (FLIR1) documents a portion of the event.
Hundreds of witnesses across Belgium, including dozens of national and federal police officers, report large, silent, triangular craft moving at low altitude over the country. The Belgian Air Force scrambles F-16s on 30–31 March 1990 and obtains a brief radar lock that is later attributed to anomalous propagation.
Capt. Kenju Terauchi reports two small craft and a much larger, walnut-shaped 'mothership' alongside a Japan Airlines 747 cargo flight transiting Alaskan airspace. The objects are corroborated by FAA ground radar at Anchorage Center.
Two Imperial Iranian Air Force F-4 Phantoms intercept an unidentified object over Tehran. Both pilots report electronic-system failures, and one reports temporary loss of weapons control. A four-page Defense Intelligence Agency report on the case is later released under FOIA.
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.
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.