2 hovering bright red lights, suddenly more lights illuminated in two triangle shapesExiting route 84 westbound at exit 17, I came to a stop at the end of the ramp and looking right (north)I saw two bright red lights, about 10 o'clock high, that I first assumed were planes. It being unusual to see planes traveling that close together ( as the brightness and size of both lights were identical) I watched a moment longer and noticed that they were stationary. They were definitely hovering. I naturally assumed they were helicopters, though the red lights were unusual compared to other helicopters I've seen at night.With that thought I pulled slowly onto a side street where I could watch the lights, and confirmed that they were not moving.At that point, three bright white lights in a triangular formation replaced one of the red lights. in other words, the red light went out as the other lights came on. The triangle and the other red light began moving together, quite as if they were connected, yet at this time they were still a short distance apart from each other. The remaining red light went out and was replaced by the same pattern and brightness white lights as the first object. They then moved together, very, very close, so that if you drew two triangles of three dots each, the two would "share" the center dot. They started to move west, at first quickly, then they paused in place for a few seconds, then extremely quickly they went west and soon were lost from view. They appeared to be rising in altitude as they moved, but despite this they were lost from view due to my position in a valley of sorts between hills. During this sighting I lowered my car windows to hear any jet engine sounds, but I heard none. I did notice other aircraft, much higher, and much more typical of commercial planes. I've seen military fighter jets travel in that close a formation, but never outside of an air show, and not at night. If these were military, they have to be of the variety that can hover, and then speed off. Certainly military planes exist that can do so, but I think those are rare enough that the sighting deserved to be reported here.