This fifth wheel is gone in less than six minutes from the time of the first flame. By the time the fire department arrives, there’s virtually nothing left.
The good news is that at this RV park, the RV sites are far enough apart that the fire did not take out its neighbors. Think about your own experiences: how many times has your RV been situated just a few feet away from your neighbor? If that would have been the case here, your RV would have perished as well.