Multiple wildfires, including the Palisades Fire and Eaton Fire, are raging across Southern California Friday, leaving at least 10 dead and burning more than 10,000 homes across 27,000 acres, officials say.

It would take four days before firefighters could establish even a short line of containment around it. And yet, well before the Palisades Fire ignited Tuesday morning, preparations had begun for aggressive firefighting.

Here’s a closer look at what to know about the fires.