Thanks Nige.
The rest of you - smell the coffee lads, this is a once in a lifetime event and if you think the system is going to even consider jeopardising the event because of a dodgy puddle jumper drifiting into zone or even a pro charter flt being hi-jacked...you're in cloud cuckoo land.
Ground the lot, carpet ban everything and at least you minimse the risk to a workable level.
I'd love to hear your alternatives
