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Nuclear Facility

4 events

Sighting
Featured

The nuclear-weapons plant intrusion, released again — this time with the redactions lifted

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.

PANTEX nuclear-weapons facility, Texas — United States#Radar Confirmed#Department of War#Nuclear Facility#PURSUE Release 04
Official Statement

Captain Edward J. Ruppelt's March 1952 briefing: 800 cases, 20 percent unexplained, radar tracks at 1,000 to 3,500 mph — now on tape

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.

Boston, Massachusetts — United States#U.S. Air Force#Cold War#Radar Confirmed#Project Blue Book
Document Release
Featured

Los Alamos, 1949: the men who built the bomb spent a day arguing about green fireballs

PURSUE Release 04 publishes the verbatim transcript of a March 22, 1949 conference at Los Alamos, called after months of unexplained 'green fireball' sightings over the laboratory that built the first atomic bombs. Manhattan Project physicists — Edward Teller among them — argued over explanations ranging from shallow-angle meteors to an 'electron phenomenon'; meteoriticist Lincoln LaPaz told the room nothing like it had ever been seen in a meteorite fall. The conference adjourned without a consensus.

Los Alamos, New Mexico — United States#Cold War#Multiple Witnesses#Department of War#Nuclear Facility
Document Release
Featured

Sandia, New Mexico: 209 'green orbs, discs, and fireballs' over a nuclear-weapons facility

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.

Sandia Base, New Mexico — United States#U.S. Air Force#Cold War#Multiple Witnesses#Department of War