From the little I and my collegues have been told there is going to be a whole heap of planes getting grounded with pilots in pokey on that date if they are daft enough to operate into certain countrys. UK should be OK but stay well clear of France and Germany. Aparentoly its going to be ground and ask questions when they have time which with the numbers involved will be more than a couple of days in the slammer.
If it wasn't so serious with guys with familys it would be funny.