Airlines slowly restore flights after Chicago air traffic control fire

The nation's air travel system slowly began to recover Saturday after an alleged act of employee sabotage at a large regional air traffic control center brought Chicago's two international airports to a halt. At the height of the travel misery Friday, more than 2,000 flights in and out of O'Hare and Midway airports had been canceled, sending waves of travel disruption rippling across the country.

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