Saw at least 8 circular craft that looked like might have been in a formation moving across the sky above our location.

We were at a Chris Stapleton concert when I looked up in the sky and saw a formation of circular aircraft flying over. They weren’t going fast but some of them did seem to speed up and slow down along with traveling counter to the direction of the bulk of the craft. They appeared silver in color.
There is one that reminded me of one of the alien craft portrayed in the original Star Trek series. It seemed to have many lights on it that kept flashing.
At times it looked as if one or two of the craft might have let loose another craft.
This area is near the Atlanta Airport so there were planes in the air but not near these objects.