Travelers relying on Southwest Airlines to get them home were mostly still stranded Thursday morning, barely 24-hours after Transportation Secretary Pete Buttigieg publicly upbraided the carrier and warned it to do better – or else. AP reports exhausted Southwest passengers were looking for alternative carriers or even renting cars to get them on their way as the airline’s CEO said it could be next week before the flight fiasco is over. By late Wednesday afternoon on the East Coast some 90 percent of all canceled flights in the U.S. were on Southwest, according to the FlightAware tracking service. Conditions had...