Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.
Thats Kool. Were they blanks or a simunition? They didn't use live rounds. Did they?
For your information, simunition ammunition produces projectiles and I very much doubt that they would have wanted that around an airport or airshow for that matter... I dont believe they make simunition in 50 cal either. It is a cqb type training tool.