Jack, in the briefing for this airshow there are clear ground references and lines to fly for the different groups of airplanes, i.e. the bombers fly the centerline of the runway and the fighters 500ft to the left of the centerline, and that line will be marked somehow. I flew this airshow back in the Midland days and rather than one big airshow, it is more like 4 in one. The trainers, fighters, bombers and cargos each fly their own briefed patterns. There will always be airplanes out of position or patterns that need adjusting and this is the job of the air boss, who is constantly talking and directing during this performance.