A Transportation Security Administration officer, right, checks a passenger's airline ticket at Terminal 3 at O'Hare International Airport in Chicago on Friday, Dec. 20, 2013. A local weather forecast predicts rain will continue Friday with some light freezing drizzle, with a chance of rain and sleet Saturday morning, turning to snow and sleet in the afternoon. A stew of foul weather, ranging from freezing rain and snow in the Midwest to thunderstorms and possible tornadoes in the South, is arriving just in time for one of the busiest travel weekends of the year. (AP Photo/Nam Y. Huh)