I was waiting for a bus. I noticed green and red lights shaped like a chopper but no sound-noise. Then I saw another go in same direction,nw to se same as first. But I believe it was the same and only object. I saw it do a reverse of direction two times.Then I got on bus and asked the driver if he sees what I see I don`t know if he did or not. I had no feelings about this except that it had been a long time since my last sighting approx. 20yrs. prior. This helicopter looking object reversed direction without stopping, making sound or circling.Thank you. Ron