STL Lambert Field was apparently hit by a tornado last night. The airport is closed indefinitely. Many windows were broken in both terminals and the airport is using backup emergency generators for electrical power. Some passengers were evacuated from planes on the ground. No serious injuries have been reported. If you are scheduled to fly through/to/from STL, you probably should contact DL ASAP. DL has been expanding service in STL during about the last year into a sort of focus city. STL was one of the "magic four" airports that had a double MQM promo in 2010.