Barack Obama's plane made an unscheduled landing in St. Louis Monday after "an emergency slide located in the tail cone of the plane deployed in flight," according to the airline that owns the chartered plane.
The plane landed safely.
Midwest Airlines released a statement saying that while "there was never an issue as to the safety of the flight, as a precautionary measure, we decided to divert the plane." 
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CNN's Alexander Marquardt and Richard Greene contributed to this report.
All About Barack Obama • Charlotte (North Carolina) • St. Louis
