What are the plausible explanations here? I can't think of anything except military action against Mexico (or the cartels inside Mexico). But even that doesn't fit well.
A suspected terror attack could explain the airspace around the airport, but not the weird trapezoid restriction next to the city.
The duration of 10 days is also weird, that seems very long for any kind of emergency situation. And as far as I understand, it is unusual to have no exceptions at all here e.g. for medical transports via helicopter.