Travelers around the United States faced delays at major airports during the busy holiday weekend, as winter weather disrupted airlines' schedules and software issues temporarily grounded a popular plane model in the days after Thanksgiving.

There were 12,113 inbound and outbound flight delays reported across the U.S. on Sunday, according to the tracking site FlightAware . The tracker also showed 1,424 flight cancellations. Airports in Chicago, New York City, Boston, Des Moines, Fort Lauderdale and Detroit were among those most affected. There was also at least one rail disruption in Providence, Rhode Island, where a fire broke out beneath three Amtrak train cars with passengers inside. The Providence Fire Department said crews extinguished the fire and relocated the train cars, a

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