The President will visit Chicago Friday for the first time since taking office. As I've speculated before, he brings with him a temporary flight restriction (TFR) affecting the second-busiest airspace in the world:
ALL AIRCRAFT OPERATIONS WITHIN THE 10 NMR AREA LISTED ABOVE, KNOWN AS THE INNER CORE, ARE PROHIBITED EXCEPT FOR: APPROVED LAW ENFORCEMENT, MILITARY AIRCRAFT DIRECTLY SUPPORTING THE UNITED STATES SECRET SERVICE (USSS) AND THE OFFICE OF THE PRESIDENT OF THE UNITED STATES, APPROVED AIR AMBULANCE FLIGHTS, AND REGULARLY SCHEDULED COMMERCIAL PASSENGER...FLIGHTS....
(The shouting capitals come free from the FAA.)
Notice, on the map below, that Midway Airport is within the 10-mile circle, and my home airport, Chicago Executive (and O'Hare) is within the 30-mile ring:
The TFR prohibits flight training within the 30-mile ring, too, but planes can depart on a discrete transponder code and fly to another airport to practice landings.
Welcome home, Mr. President. I'm glad I'm not flying this weekend.