Chicago NATO Summit: No Fly Zone

We have no threats here in the U.S.A. but we are made to believe there are threats once again for the NATO Summit over downtown Chicago:

Any aircraft that are in violation of this airspace and deemed a threat will be intercepted by military and may be shot down:

http://chicago.cbslocal.com/2012/05/02/no-fly-zone-to-be-enforced-by-shoot-to-kill-order-during-nato-summit/

Here's one thing that might actually happen:  Those military helicopters are always crashing and we already know they've been flying around, and between these buildings practicing for this event.  One of them will probably crash and kill innocent bystanders but that will be ok of course.  Why don't they have the meeting at the Denver, Colorado underground labyrinth abyss?  Hey it's complete with decorative symbols just appropriate to the clientele.  And they would be much safer from some alleged attack underground.  I don't get why they don't feel safe in Chicago's "gun-free zone".  Do you?

...developing...