A firefighter from Cosumnes Fire Department monitors a back fire while battling the Rim Fire on August 22, 2013 in Groveland, California.
The Rim Fire continues to burn east into Yosemite National Park. The blaze has now blackened roughly 225 square miles and is threatening some 4,500 structures. Officials estimate that the fire is about 7 percent contained. Helicopter and ground crews fought the massive wildfire on all fronts Sunday, and made a stand across the fire's northwest edge to defend Tuolumne City. Reporter: Grace Rubenstein