Also Read: See the Shocking Devastation of Southern California's Wildfires (Photos and Video)But Walker didn’t want the film to become a didactic explanation of science and policy, so she worked to make the people suffering the worst and most direct effects of the fires at the center of the story, especially the firefighters who find themselves increasingly overwhelmed as they try to protect hillside homes from fires that are spreading faster than ever.“I really want to make character-driven,