I saw a fighter jet closely being followed by a changing faceted shape objet which at first I was being towed by the jet.

Two fighter jets fly over my house everyday just before noon. They are very loud and when I hear them coming I often step outside to watch them fly by.
On Saturday I saw the first one fly by shortly followed by the second. But the second one appeared to be towing an oddly shaped object. But then I thought fighter jets don’t tow things. The object appeared to be to be following closely but not in a true straight line. Not jerky but like someone steering a speed boat towing a skier.
The object was grey-ish sort of rectangular wider than high but with many facets.
Then I heard a third fighter jet approaching. I turned to look at it and when I looked back the other two were out of sight. I figured the third pilot must have known what was going on.
I didn’t think much about it until all the other sightings started to be reported.