I was outside walking my dog at 1:00 pm est when i heard a small propeller plane and looked up to find it. at that point i spotted something else in the sky, at first i thought it looked like a satellite, and then thought perhaps it was a plane. but the shape of the object was plane-like, however the wing-span was much shorter and they sat further towards the back of the craft, it was mostly white, with silver or gray joints. the ufo was moving at a much faster pace than the jets that usually fly over, it left no trail. it was headed northeast towards bristol, va from johnson city, tn seemingly following a normal path for everyday air-traffic in the area. as i gazed at the object it appeared to be blurry, or my eyes were blurry because i was looking at the object, i don't know which. i didn't take my eyes off the object for at least 3 minutes, after-which i glanced down at the dog and when i looked back up, the object had completely disappeared. not a cloud in the sky, mind you, i imagine the object was also far too high to land that quickly, as it was at a reasonable elevation.