Multiple orb shaped lights in the sky traveling over Naperville.I saw a series of lights in the sky why entering my neighborhood. I stopped and watch ed these lights change directing and altitude. Some were traveling very close to each other. I am a pilot so noting that could be a fixed wing aircraft, only possibly a helicopter but no noise. I called 911 and told them. Went home parked my car and decided to walk around to see if any more lights appreared. Unbelievably they did, I ran to my neighbors house so I would have a witness.