UAP Over Nuclear Facilities — Malmstrom, Sandia, and the Pattern

Sandia National Laboratories 1948–1950 — 209 Sightings at the Nuclear Weapons Design Hub

The oldest major nuclear-site UAP record in the public archive is the Armed Forces Special Weapons Program sighting report from Sandia National Laboratories, released in PURSUE Release 02 (May 2026). The report documents 209 separate UAP sightings at and around Sandia between 1948 and 1950 — the facility that, at the time, was responsible for the design and assembly of U.S. nuclear weapons. The sightings covered objects described variously as green fireballs, glowing discs, and elongated metallic craft operating in the vicinity of the most sensitive nuclear weapons complex in the country.

The green fireball phenomenon is particularly notable. In late 1948 and through 1949, a wave of distinctive bright green fireballs — moving at low altitude and at speeds inconsistent with known meteors — was observed repeatedly over nuclear weapons and atomic energy facilities in New Mexico, including Los Alamos, Sandia, Kirtland Air Force Base, and the Trinity test site. The phenomenon was sufficiently alarming that the Air Force commissioned a formal study by Dr. Lincoln LaPaz of the University of New Mexico, who concluded after extensive analysis that the fireballs were not meteors and were of unknown origin. The LaPaz report is part of the Project Sign record and is referenced in the NARA archive.

Malmstrom AFB 1967 — Ten ICBMs Disabled as UAP Hovered Over Launch Control

The most consequential nuclear-site UAP incident in the archive occurred on March 24, 1967, at Malmstrom Air Force Base's Echo Flight Launch Control Facility in Montana. First Lieutenant Robert Salas, the officer on duty in the hardened underground launch control capsule, received a security alert call from the topside guard reporting a glowing red oval object hovering silently over the perimeter fence. Within minutes, all ten Minuteman I ICBMs at Echo Flight went to 'No-Go' status — offline and unable to launch. An investigation by Boeing engineers determined that each missile had independently dropped off-alert due to an unexpected signal in the guidance and control system; no plausible explanation for a simultaneous spontaneous failure affecting ten separate missiles was found.

Salas, who has given sworn testimony before Congress and at multiple conferences, maintains that the UAP presence and the ICBM shutdowns were directly correlated and that a concurrent incident at another Malmstrom facility (Oscar Flight) produced similar results the same week. The 341st Strategic Missile Wing report documenting the Echo Flight shutdown is in the public archive. Former President Jimmy Carter, as a Navy nuclear submarine officer in 1952, also reported a separate UAP encounter — though not at a nuclear facility. The pattern of nuclear site encounters, from the Salas account forward, is documented in congressional testimony spanning from the 1970s to the 2023 hearings.

PURSUE Release 02 — The 2026 Nuclear Facility UAP File

PURSUE Release 02 (May 22, 2026) included a file referencing the Sandia 1948–1950 sighting record — the same period as the green fireball wave documented by LaPaz. The release of this file under the PURSUE program's NDAA Section 1841 mandate is significant because it represents the first time the comprehensive Sandia sighting log has been released in a unified, officially processed format rather than piecemeal through FOIA requests.

The PURSUE R02 Sandia file includes additional context not previously available in the public domain: incident response protocols developed by the Armed Forces Special Weapons Program in response to the sightings, a cross-reference to the LaPaz green fireball report, and summary assessments by AFSW officers about what the sightings might represent and whether they constituted a national security threat to nuclear weapons security. This file is accessible through the Now Declassified PURSUE index at /pursue/release-02 and represents one of the most historically significant documents in the three-release PURSUE archive.

What the Pattern Shows — 75 Years of UAP and Nuclear Infrastructure

The Sandia-Malmstrom-PURSUE sequence is not coincidental — it is the most persistent geographic and institutional pattern in the entire UAP archive. Across 75 years of official records, the intersection of UAP activity with nuclear weapons facilities produces the same profile: objects operating at low altitude in restricted airspace, observed by trained military personnel, detected on radar or electronic sensors, exhibiting performance beyond known aircraft, and producing in some cases demonstrable physical effects on nuclear weapons systems.

Robert Hastings, a researcher who has spent over 40 years documenting nuclear site UAP cases, has collected sworn testimony from more than 160 U.S. Air Force veterans describing UAP at nuclear weapons facilities. His findings — presented to the Washington, D.C. National Press Club in 2010 — were corroborated by seven former USAF officers including Robert Salas. The pattern is referenced in the AARO Historical Record Report and in multiple pieces of congressional testimony.

The strategic significance of the nuclear site pattern for current UAP research is that it implies the phenomenon — whatever its origin — has been aware of and interested in nuclear weapons infrastructure since the earliest days of the atomic era. Whether this represents technological monitoring, strategic reconnaissance, or something else entirely, the pattern represents the strongest argument for treating UAP as a matter of national security rather than a scientific curiosity.