An early season wildfire slowly chewed its way through dense brush near Los Angeles on Sunday, forcing more than 1,000 people from homes in the foothills. More than 400 firefighters attacked the 400-acre fire, aided by two helicopters and water-dropping air tankers, said Elisa Weaver of the Arcadia Fire Department. Residents evacuated at least 550 homes Saturday night and Sunday, but none had burned.