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Wildfires threaten Yosemite

A firefighter from the Colorado based Long Canyon Fire Department monitors a back fire while battling the Rim Fire on August 22, 2013 in Groveland, California. (Photo by Justin Sullivan/Getty Images)

Wildfires threaten California's Yosemite park

August 27, 2013

One of the largest California wildfires in decades roared largely

unchecked for a 10th day.