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A firefighting helicopter reloads its supply of retardant before heading out to make a drop on the Ponderosa Fire near Paynes Creek, Calif., Wednesday, Aug. 22, 2012. The Ponderosa Fire, which has scorched about 38 square miles since Saturday, was 50 percent contained Wednesday morning, according to the California Department of Forestry and Fire Protection. The threat to homes about 35 miles east of Redding has dropped from 3,500 earlier this week to roughly 200 residences. (AP Photo/Rich Pedroncelli)

Firefighters battle Calif. wildfire

Air tankers and helicopters flew repeatedly into a deep rim rock canyon to douse the spearhead of a massive wildfire in Northern California and stop it from driving into a nearby mountain community and Lassen Volcanic National Park. (Aug. 24)