our safety regulations er dictate that they be a certain distance from the crowd, so that if anything did go wrong, the aircraft would be able to er get out of the way, but no, there is not going to be any danger at all, they'll make their approaches to the base as if they were attacking, and then we'll have simulated ground bursts, a large fire as it were , on the ground, it will be going off, providing the sound effects for it, but it's going to be just a great thing to sit and watch.