PURSUE-RELEASE-04

A U.S. Navy O-4 pilot filed a Range Fouler Debrief reporting a daytime airborne sighting over the Eastern United States in 2020. The pilot described the object as "quite small," with a shape that was "indiscernible," a metallic appearance, and a reflective underside, and noted it "continued in a constant direction." The Department of the Navy released the document in part on May 19, 2026; the date, time, location, speed, and sensor type used to capture the object are all redacted.

A 1955 CIA memorandum from Harvey Scoville Jr., Assistant Director of Scientific Intelligence, addressed to the Director of Central Intelligence, analyzes a Prague dispatch dated 13 October 1955 reporting the sighting of two "flying saucers or disc-like unconventional aircraft." Mr. Efron, one of four observers, told interviewers he saw only two lights rise vertically and pass overhead at roughly 9,000 feet, and could not describe the body or shape of the objects.

The Air Intelligence Division of the U.S. Air Force and the Office of Naval Intelligence jointly produced Study No. 203, "Analysis of Flying Object Incidents in the United States," dated December 10, 1948. The study examined approximately 210 reported incidents involving flying objects described as disk-shaped, rough cigar-shaped, or balls of fire, observed by U.S. Weather Bureau personnel, USAF rated officers, and experienced civilian pilots.

On February 16, 1949, the United States Atomic Energy Commission convened a classified conference on aerial phenomena at Los Alamos Scientific Laboratory in New Mexico, attended by scientists including Dr. Edward Teller and Dr. Frederick Reines, along with Army, FBI, and AFSWP representatives. The conference examined recurring "green fireball" sightings reported since December 1948 by airline pilots, AESS inspectors, and others over New Mexico and western Texas.

FBI Chicago file 100-44501 contains two pieces of correspondence. The first, a September 22, 1967 memo from SA C. Leonard Treviranus, records that eleven-year-old Tom Mitchell of 7825 South Colfax, Chicago, telephoned the FBI on September 16, 1967, to report hearing a "weird" noise and seeing a "flash of light going north in the sky" at approximately 8:30 PM; the information was passed to Sergeant Eugene Ripka of the Army-Air Force 755th Radar Squadron.

A CIA memorandum dated 31 October 1955, addressed to the Director of Central Intelligence and authored by Herbert Scoville Jr., Assistant Director of Scientific Intelligence, summarizes debriefings of four witnesses who observed "flying saucers or unconventional aircraft" from a train near Alyaty, Soviet Azerbaijan, at 1910 hours in 1955. The witnesses included Senator Richard Russell, who saw a small greenish-yellow glowing ball rising rapidly, and Colonel Hathaway, who described a shadowy object with a rotating light at its base that did not resemble any aircraft, rocket, or missile he had seen.

A Department of War file dated 1954-1955 contains reports, memoranda, and correspondence on Avro Project Y2, a near-circular VTOL aircraft developed by A. V. Roe Canada Ltd. that a 1954 memorandum noted could be mistaken for a flying saucer. The file includes an AFOIN special project investigating Soviet capabilities to develop a vertical take-off aircraft similar in appearance to a flying saucer, and a USAF committee finding that simultaneous ground radar returns and aircrew visual sightings of a UFO near Newfoundland in July 1955 could not be explained.

On April 19, 1966, the USAF Scientific Advisory Board's Ad Hoc Committee to Review Project Blue Book met at the Pentagon to discuss implementing its recommendation that the Air Force contract university scientists to investigate selected UFO sightings. On April 5, 1966, Secretary of the Air Force Harold Brown had accepted the recommendation and assigned General Ferguson responsibility for implementation.

The U.S. Air Force Directorate of Intelligence issued Air Intelligence Report No. 100-203-79, "Analysis of Flying Object Incidents in the United States," Study No. 203, dated April 28, 1949. The study examined approximately 210 reported incidents involving flying objects, described in three categories: disk-shaped, rough cigar-shaped, and balls of fire, with observers including U.S. Weather Bureau personnel, USAF rated officers, and experienced civilian pilots.

In 2019, five personnel aboard a civilian King Air over the Eastern United States reported observing a small object below their aircraft traveling in a straight line opposite their direction at high speed. The primary observer, who reported 28 years of service with the USAF and Navy, tracked the object for approximately 10 to 15 seconds before activating a recorder; when zooming in for resolution, the object's speed carried it out of the field of view and it could not be reacquired. Post-flight analysis of the video suggested the object appeared to be rectangular.

A U.S. Navy O-3 Weapons Systems Officer filed a Range Fouler Debrief with the Department of War recording an encounter over the Atlantic Ocean at dusk in 2020. The observer described a single contact as "a darker, maroonish color, approximately 12-15ft in height," appearing as "a large, somewhat deformed balloon" that "traveled with the wind" in a generally southern direction with no maneuvers or change in direction. The crew passed the object at the merge, could not verify the balloon characterization, and returned to the ship. The date, location, and several narrative passages are redacted.

On September 1, 2015, at approximately 0710 hours, the Pantex Plant Ground Surveillance Radar detected an unknown object flying west of the facility near Amarillo, Texas, traveling north at 10 to 15 mph. Protective Force personnel followed the object by vehicle for several miles; a lieutenant and SPO observed it through binoculars and described it as a "diamond" type shape, approximately 4 ft. tall and 2 ft. wide at the bottom, with no audible sound and no identifiable propulsion system. The object was last seen heading ENE near County Road G and F.M. 1342 in Carson County before personnel lost sight of it.

The Air Materiel Command issued this initial report on unidentified flying objects on 23 April 1948, prepared at Wright-Patterson Air Force Base under Project SIGN, which had been directed by a Headquarters USAF letter dated 30 December 1947 signed by General L. C. Craigie on the subject of "Flying Discs." The report tabulates 100 sightings from 1947 through 1 February 1948, noting that exhaust trails were reported 23 times and that speeds ranged from hovering to supersonic.

In January 1955, Lt. Col. Joseph A. Bloomer of the Air Force Directorate of Intelligence responded to letters from Senator Sparkman, private citizens, and foreign correspondents regarding the Unidentified Flying Object Program. The correspondence addresses the "seizure" of a meteorite that fell through the roof of Mrs. Hewlett Hodges' home in Sylacauga, Alabama, in November 1954, which Air Force officers retrieved, flew to the Air Technical Intelligence Center at Wright-Patterson Air Force Base, and determined to be a meteorite before returning it to Mrs. Hodges' attorney on 9 December 1954.