Actually, I can't be sure if any of these guys are former military. But 2 of the guys are air racers. Terry, in the yellow SNJ was being checked out for formation during that flight. You can tell that the other three guys were used to formation flight. The grouping was pretty tight, yet when the air got choppy, they all knew to separate a bit and which way to go.
The nice thing for me is that I was invited to the pilot's briefing beforehand. That way, I knew who was going to be in which slot and what the manuever were going to be, etc. I had no input to that, which is proper as I was just a passenger. I knew that if they did what they had to do, my job would be easy.