A number of stumps smolder inside Chadron State Park south of south of Chadron, Neb., on Sunday, Sept. 2, 2012. Nebraska Gov. Dave Heineman toured the West Ash fire site Sunday. Officials estimated Sunday that the fires have now burned roughly 273 square miles, including at least 27,000 acres in South Dakota. That's up from roughly 93 square miles on Saturday and more than twice the size of Omaha. (AP Photo/Omaha World-Herald, Jeff Beiermann, Pool)