Article Photos: State-by-state look at frigid blast hitting US 25/36

City of Richardson employees Dickie Cooper, left, and Nate Griffith, use chainsaws and other light equipment to cut up a fallen tree blocking a neighborhood intersection, Friday, Dec. 6, 2013, in Richardson, Texas. An ice storm in North Texas has knocked out power to more than a quarter of a million homes and business, canceled almost 1,000 flights and contributed to a fatal wreck. The National Weather Service issued a winter storm warning for the Dallas area until Friday night. (AP Photo/Tony Gutierrez)