Oak Ridge Tennessee UFO Sightings

Declassified FBI files from 1950 describe detection of an apparent suqadron of unknown objects tracked over Oak Ridge installation on October 12th, stating:
“USAF radar installation at Knoxville…picked up indications of eleven objects and perhaps more traveling across controlled area of Atomic Energy installation at Oak Ridge…Altitude of objects varied from one thousand to five thousand feet…and density from reading made by light aircraft equal in size to C-47, speed from one hundred to one hundred twenty-five miles per hour…No reasonable explanation for radar readings yet developed although operators are experienced reliable personnel and radar set is in perfect operating condition. Bureau will advise of further developments.”