The Good Ol' USA have quite a few methods of closing airports in use at present, it seems.
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Ah, Spindoctor, you should realise that 04/01 [as they would notate the date] brings out the same behaviour in the US as in our part of the world. No need for Microsoft to rush out an update for the Flt Sim, I shouldn't think. However, the lawsuit from Mayor Daley will be on its way to you shortly. Make sure you apply to have it transferred to an NZ court. The defamation laws are less draconian.