Fire bosses say they are making progress in taming the 226-square-mile (585-sq. kilometer) arson fire north of Los Angeles that has led to a homicide investigation into the deaths of two firefighters, AP reported. Fire spokesman John Huschke said early Friday that «it's pretty quiet» on the fire lines as hand crews and bulldozers clear a containment line around fire's perimeter. The blaze is 38 percent surrounded. Investigators say the 11-day-old wildfire _ one of the largest in Southern California's history _ was an act of arson. An unidentified source close to the investigation tells the Los Angeles Times that evidence along Angeles Crest Highway includes incendiary material.