How the hell would they know? The never got off of their collective A$$ES and surveyed the scene. They stayed in the their vehicles and waited until the fire encroached the neighbor's property. Then they got out and put oout the fire as it crossed the property line.
You just don't understand the concept of a subscription based fire service do you? Next time Burger King screws up your whopper head on over to McDonalds and complain about it. If the homeowner wanted fire protection he needed to pay for it. IT IS REALLY THAT HARD TO UNDERSTAND???????