The timing of the parade flypast
I've always been impressed by the precision timing of parade flypasts. The boss goes up the steps, turns around, then at the exact moment of 'Present arms' the plane/s fly overhead.
Do they set an exact time in advance? What if the boss is two minutes late?
Do the plane/s loiter nearby to be called in by radio? Does the parade commander have to visually spot the plane/s in order to give the 'Present arms' command at exactly the right instant?
Has there ever been an embarrassing cockup?
Any answers would be greatly appreciated.