YOSEMITE NATIONAL PARK, CA - AUGUST 25:  Trees burned by the Rim Fire stand on August 25, 2013 in Yosemite National Park, California. The Rim Fire continues to burn out of control and threatens 4,500 homes outside of Yosemite National Park. Over 2,000 firefighters are battling the blaze that has entered a section of Yosemite National Park and is currently 7 percent contained.  (Photo by Justin Sullivan/Getty Images)