This article highlights a history of UAP sightings at Pantex Nuclear facility ranging from the 1950s to as recently as 2015. These events help highlight the long history of UAP sightings around nuclear facilities.
“From the late 1950's to the mid 1960's UFO's were seen over Pantex Ordnance Plant near Amarillo TX. I lived three miles away to the east at the time. During this period there were about 100 sightings, but those of us that remember [sic] don't talk about it much.
The Airbase was still open and they would scramble Fighters to intercept. But it was always the same. When the jets closed to 2 miles the object would go up at high speed. The jets would circle a while [sic] then land. Then sometimes it would come back down to its spot.
This was repeated on many nights. Always the same type of object, that changed colors.”