We were out driving in the woods 5 miles north of seeley lake, mt stargazing. we noticed the object first through the trees and thought maybe they were lights from down in town. one of the crafts was a large circular craft that moved rapidly, changed direction quickly & looked almost like a strobe light but with colors of blue,green,white and red. it was in the sw skies over the mountains. the other elongated, white & yellowish glowing craft appeared from over the mountain and was just on or barely above the tree line to the west. it moved towards the other craft and would disappear and reappear in a split second. it would get extremely bright and then dim down again, also c hganging direction and altitude incredibly quickly. watching these types of events here are not unusual at all, in fact that is why we go out stargazing. we did get a little nervous because one craft seemed to be coming towards us at one time but mostly we were excited. we lost sight because we drove down the mountain to try and get a better viewpoint.