And before anyone goes crazy on “a bullet hitting a grassy spot,” I was in the Guard and put out a few fires on ranges.
And BTW, I lived near quite a few wildfires. There were almost always assumptions and rumors about arson and homeless people, but most of the fires near me were started by lightning (not many people around). Many others were accidents involving established residents with controlled burns (with permits), campfires, smoking, cooking out, machines emitting sparks and the like. The only fire that I remember involving arson was the Hayman Fire, started by a government employee who was hating on her ex.
In California? I don’t know. The population per square mile is huge there, with many people of different cultures.
Doubtful it was lightening—we get lightening only very rarely here in No CA—maybe once a year or even less. . .