Analyst's note:  If you're planning on flying near Chicago when NATO leaders are meeting there, you may want to reconsider.  The FAA has approved shooting you down if you fly into the wrong area from May 19 to May 21.  Specifically that "wrong area" is said to be within 10 nautical miles of downtown Chicago and below 18,000 feet. You understand of course that these NATO wonks are really important.   This is just another service by YOUR federal gov't.

"A new report reveals plans to keep residents and dignitaries safe during the NATO Summit include a no-fly zone, with a shoot-to-kill mandate for those who break the ban. [...]