The nation’s capital, where the president, members of Congress, and centers of government reside, is possibly the no-fly zone that makes the most sense. There is a “Special Flight Rules Area” that covers a 30-mile radius around Ronald Reagan International Airport.
It’s the reason Reagan International Airport is one of the airports with the most nerve-racking takeoffs and landings. Pilots have to carefully maneuver around the no-fly zones, sometimes swerving and creating a somewhat uncomfortable takeoff for passengers.
And the proceedings if someone violates the no-fly zone are no joke. In 2005, a pilot and flying student accidentally veered into the no-fly zone; all of the Capitol had to be hastily evacuated.