sir1963:
{snip}property is at risk, they will be unlikely to even slow for the gates.
Likewise for a vehicle that may be blocking their access (eg inconsiderate parkers), they will just keep going.
When was the last time you saw a NZ fire truck with damage done by ramming something?
It doesn't happen, it's not "Backdraft".
They *might* go through a wire fence in a paddock, but they won't do anything to put an appliance out of action. What happens if it causes damage to the pumps?
What happens to the next call they get? "Oh, bro, sorry about your house and family, but we had to ram this gate..."