UFO Sighting occurred on Oct.15th 2017 over High Ridge Montana. I was driving south on Antire road between 44 and High Ridge on my way home between 9:30 pm and 9:40 pm, I noticed 2 red orange (more orange than red) lights in the distance off to my right side in the direction I was heading, I could not tell how far they were exactly but they were surely larger than stars more like the size of a small pill. The UFO Sightings were both moving in different directions and then I saw 1 of the lights speed up, this is when I noticed a larger UFO, the light sped into it and vanished. The larger UFO I would say was 3-4 large trees high in the sky and was accompanied by 3 deep green lights attached on the bottom which were dim and looked like it was coming up from the west - south west side of the area a few hundred to several hundred feet away, I'm not good at telling distance but it looked like a bus size flying in the sky coming towards the road and the lights in my car dimmed and my radio lost signal like it was interference until I was about 2 miles down the road, I drive a 2006 ford fusion but this has never happened. I could not make out a color of the larger UFO's body but could see an outline which appeared to me to be long and rounded at the ends. I drove past the area and could no longer view it. mufon cms# 87450