Large triangular craft with bright white lights silently flew over Blutf City near Holston Lake.At around 8PM at night I was driving home from Bluff City towards Johnson City. As I was driving I noticed bright lights in the sky and the shadow of what looked to be a giant triangular airplane. It was moving over the tree tops, much lower than any airplane I've seen in the area. I rolled down my window to get a better look expecting to hear the roar of a usual air craft but it was completely silent. Triangular in shape, it was formed by three bright white balls of light with a red light in the center of the triangle and much smaller orange lights around that. I turned my car around to follow it. Realizing I had my camera on me, I pulled over into a nearby parking lot. As I went to get out of my car, I looked up and watched it fly over me. I reached into my car and grabbed my camera but when I looked back up every light on the craft went out and the shadow of it disappeared. Thinking it was still there and I was unable to see it without it's lights, I set up my camera and took pictures of the vicinity it would have been in had it continued it's flight pattern but when I reviewed the images nothing was there.