Three friends of mine and i were watching the sunset on evergreen lake in comlara park in hudson, illinois about ten miles away from our college campus. as the sky is getting darker, two lights appeared out of nowhere (literally in the blink of an eye) directly above the lake. the red light was above the green light and they were obviously attached to something in which the outline slightly resembled a human with his arms a bit out. it flew towards us, evident by how the lights were getting larger as it flew closer, flew backwards (without the lights turning away from us) and then disappeared just as fast as it appeared. the lights did not blink once. we immediately left.