Around 6:00 AM. Out for a walk. It was still dark. Stopped, was looking up at stars – observing Orion. Suddenly saw four orange-ish lights moving very quickly across the sky in a straight line. Based on motion relative to Orion, direction of movement was roughly north to south. Thought was an aircraft. Then realized there was no sound – completely silent. Also, were moving way to fast to be an airplane. Then the two on the right moved off toward the right at slightly different rates. Appeared to be four separate objects. Were out of sight quickly. About five seconds start to finish.