I thought Mt. Wilson, the towers and the observatory were expected to be consumed before midnight pacific time last night?
It was all hype by the news geeks.
In this particular fire, Mt. Wilson repeaters and transmission towers were never in any real danger, because that area is pretty small and easy to defend from the air. They ringed the entire area in fire retardant long before the flames ever got near it. But it made for great news on TV.
Think of it like one house in the middle of a forest. If you devote much of your resources to protect that one spot, you’ll very likely succeed.