Hundreds of firefighters continue to tackle the Sandy Fire in Simi Valley on May 21, four days after it first ignited.
Crews remain positioned in communities throughout the Simi Valley area to be able to respond to any flare-ups or hot spots ...
Firefighters are racing to keep flames away from the Santa Susana Field Laboratory, a former nuclear and rocket testing site.
Multiple wildfires have ignited in Southern California in recent days, as investigators examine unusual possible ignition sources.