Case File · Department of Energy · Post-Cold War (1990-2016) Declassified July 10, 2026 · PURSUE Release 04

Pantex Unidentified Object Incident Report, September 1, 2015 — Department of Energy File

UFO Military Installation

This file contains imagery and a report documenting the circumstances surrounding a September 1, 2015, incident involving an unidentified object intruding the airspace above the Pantex Plant near Amarillo, Texas. The Pantex Plant is a sensitive national security site that contains the primary…

September 1, 2015
Texas
A document shows a black and white image from a ground surveillance radar tower, with a small object circled in red in the sky above a flat landscape.
A document shows a black and white image from a ground surveillance radar tower, with a small object circled in red in the sky above a flat landscape. · Source: declassified document

Incident Overview

On September 1, 2015, an unidentified object entered the airspace above the Pantex Plant, on the high, treeless plain of the Texas Panhandle northeast of Amarillo. Pantex is not an ordinary federal site. Operated for the Department of Energy by the National Nuclear Security Administration, it is the primary American facility for the assembly, disassembly, maintenance, and life-extension of nuclear weapons. Its perimeter is watched by ground surveillance radar towers designed to catch low, slow, small things, which is precisely how the object in this file came to be photographed at all. The Department of Energy preserved a documentary record of the intrusion, and that record was declassified and published on July 10, 2026 as part of the fourth tranche of the Department of War’s Presidential Unsealing and Reporting System for UAP Encounters (PURSUE).

An unidentified object over a nuclear weapons facility is not, in the American archival record, an unusual thing to find. It is nearly a genre. The declassified files trace the pattern across the weapons complex from the late 1940s onward — the Sandia Base correspondence of 1948 to 1950, the missile fields, the storage sites, the research campuses — a thread this archive follows across four decades of the nuclear nexus. The Pantex report extends it into the drone age, and into the ambiguity that comes with it.

What the government released

This file contains imagery and a report documenting the circumstances surrounding a September 1, 2015, incident involving an unidentified object intruding the airspace above the Pantex Plant near Amarillo, Texas. The Pantex Plant is a sensitive national security site that contains the primary facility for the assembly, disassembly, maintenance, and life-extension of nuclear weapons. Pages 5 and 6 of this report were originally released under the PURSUE initiative in a more redacted form on May 22, 2026. (See: DOE-UAP-D001, Enhanced Pantex Imagery)

The same document, released twice

Buried in that official summary is the most consequential sentence in the entire tranche, and it has nothing to do with what was in the sky over Amarillo. Pages 5 and 6 of this report had already been published. They went out under PURSUE on May 22, 2026, as DOE-UAP-D001, Enhanced Pantex Imagery — and they went out with more of the page blacked out. Seven weeks later the same pages came back with less of the page blacked out, and with the incident date restored.

That earlier release withheld the incident date entirely, so the event floated free of any year and could not be correlated with anything else in the record. The July release closes that hole. The object over Pantex now has a date — September 1, 2015 — and a document that can be set beside other files, other sightings, other years.

The significance is procedural rather than evidential, and it is worth being precise about which. Nothing here suggests the object was extraordinary. What it suggests is that PURSUE’s redaction decisions are not made once and left alone. Somebody went back to a document the government had already cleared for release, reconsidered the withholdings, and let more of it through. This is the first hard evidence in the corpus that the program revisits its own judgments — that the black bars are provisional, and in at least one case narrower on review than on first release. For anyone reading a disclosure archive, that is a standing invitation to treat every redaction as a question rather than an answer.

The source manifest files this report together with the earlier, more heavily redacted Pantex imagery release — the May 2026 version of these same pages, preserved here as it was first published, so the two can be read against each other.

Status of the case

Records released under the PURSUE program are designated unresolved by the All-domain Anomaly Resolution Office, which means the federal government has not concluded the events were anomalous, has not concluded they were conventional, and has not ruled out either possibility. Here the parsimonious explanation is close at hand and should be stated plainly. Small unmanned aircraft intrusions over sensitive American sites — power plants, military bases, restricted airspace, and the nuclear complex itself — are common, well documented, and a persistent security problem that federal agencies have acknowledged and testified about for years. A cheap quadcopter over a fence line in 2015 is an ordinary event. It is also, from the point of view of a radar tower, a small unidentified object intruding on protected airspace, which is exactly what the report says it was and no more. Balloons, birds, aircraft, and perspective artifacts remain on the table as well. What makes the file worth keeping is not the object. It is the redaction history around it.

Sources