House transmission, as opposed to Forest/Tree/Brush to House. Pay special attention to the CALFIRE test that is shown in the first 5 minutes. It's not a case of "Raking the Forest", rather it's building a 5' Defensible Space around all homes, and constructing homes better. These things have been in the works in CA for a few years...even a law was passed, but very little follow through.
Link: https://abc7.com/post/southern-california-wildfires-state-is-years-behind-implementing-law-make-homes-more-fire-resistant/15810127/