Exactly.
Also rather easy to spot, don't you think?
Especially if a "Baldwin Volunteer Fire Department" vehicle is seen headed for the City of New York, where they don't normally operate.
I doubt that sophisticated terrorists would use a vehicle that is so readily identifiable.
It's just a souped up 1994 Ford explorer with lights, not a full-sized firetruck. Might as well steal a souped up truck in the inner city that's less conspicuous if terrorism is your aim.