A flight information screen displays canceled flights as passenger walk at Midway airport in Chicago, Thursday, Dec. 20, 2012. The first widespread snowstorm of the season crawled across the Midwest on Thursday, with whiteout conditions stranding holiday travelers. The storm led airlines to cancel about 1,000 flights ahead of the Christmas holiday — relatively few compared to past big storms, though the number was climbing. Southwest Airlines scratched all of its flights scheduled after 4:30 p.m. today at Midway. (AP Photo/Nam Y. Huh)
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