FILE - In this Aug. 24, 1988, file photo, Larry Walters a U.S. Forest Service firefighter from Higgins, Miss., watches the North Fork fire burns in the Yellowstone National Forest. Five wildfires have been burned mostly remote areas of Yellowstone National Park on the 25th anniversary of the infamous 1988 fires that burned more than 1,200 square miles inside Yellowstone, or more than a third of the park. (AP Photo/Ed Andreski, File)