California wildfire traps campers in national forest

Three fast-spreading California wildfires sent people fleeing Saturday, with one trapping campers at a reservoir in the Sierra National Forest, as a brutal heat wave pushed temperatures into triple digits in many parts of state.The wildfire burning near Shaver Lake exploded to 56 square miles (145 square kilometers), jumped a river and compromised the only road into the Mammoth Pool Campground, national forest spokesman Dan Tune said.At least 2,000 structures were threatened in the area about 29