As inconvienent as it may seem, the security services really have no other option than to check everything. If I was sat on one of those departing jets with my kids, I'd be frustrated and no doubt more than a little annoyed. But would hope I'd understand the need to validate everthing. Don't forget that in London, crowds fleeing from Tiger Tiger would have walked straight into the path or another bomb, had a traffic warden not booked the vehicle.