8 lights (not in a string) all moving in the same general direction. Bright orange

I arrived at home at 8:15 and looked north over the town of Chatham, Il and saw 8 lights flying low over the city. Not in formation but moving in the same general direction. I took 2 videos and 1 still picture. They appears very bright and orange. And they disappears one at a time as they made their way to the southwest. They did not zip away, but just kind of disappears after a few minutes. One at a time. I called my wife who was inside and had her come out and look. I did not hear any noise associated with them. No rotor noise or anything like that. We were both kind of dumbfounded.