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Chicago fire

A truck and chemical drums are covered with ice as firefighters help to extinguish a massive blaze at a vacant warehouse on January 23, 2013 in Chicago, Illinois. More than 200 firefighters battled a five-alarm fire as temperatures were in the single digits. (Photo by Scott Olson/Getty Images)

Chicago firefighters battle flames in bitter cold

Ice-covered Chicago firefighters spent hours fighting a massive fire at a warehouse on the city's South Side on Jan. 22, hindered by the single digit chill.