Last week, the Pentagon released a trove of documents relating to reports of UFO sightings around the country, including one of particular interest near a nuclear weapons facility in North Texas.

The Lone Star State incident occurred in September 2015 at the Pantex nuclear facility in Amarillo, according to documents detailing it at the time.

The Pantex plant is the United States' only nuclear weapons assembly and disassembly facility, according to the Texas Department of Health and Human Services.