On August 21–22, 1955, eleven members of two families at a farmhouse near Kelly, Kentucky, reported a sustained multi-hour encounter with small, luminous, humanoid figures; police, state troopers, and military police from Fort Campbell responded to the scene, and witnesses maintained their account consistently despite intensive questioning.

Five adults and seven children described creatures 3–4 feet tall with large heads and glowing eyes that returned repeatedly to doorways and windows despite gunfire. Officers who arrived at the farm found windows shot out and physical evidence consistent with the described event. Project Blue Book classified the case as a probable hoax; J. Allen Hynek later disputed that conclusion.