The Federal Aviation Administration (FAA) declared a “national defense airspace” over a portion of Lake Michigan on Sunday, temporarily closing down the area for commercial and civilian air traffic. The agency appeared to have canceled the declaration a short while later. The FAA has not clarified why it set up the flight restriction, which encompassed…

The Federal Aviation Administration (FAA) restricted airspace over a portion of Lake Michigan on Sunday to “support Department of Defense activities” that temporarily closed down the area for commercial and civilian air traffic, which was lifted a short while later. The North American Aerospace Defense Command (NORAD) confirmed later that both it and the FAA “implemented…