Seen from old rt 10 on 3 mile curve. One disc like structure at high speed was witnessed to drop straight down behind tree line located between 3 mile curve and Rum Creek in Logan, WV. Both witnesses agree the disc or perfect circle due to rotation of UFO was a very light grayish silver color. Not chrome in color though. One witness states seeing an orangish red exhaust coming from rear end immediately before seeming to drop behind trees and hit ground. Same witness states after 1 or 2 seconds of the UFOs disappearance, a twinkling trail began to appear in UFOs path lasted very briefly.