This is an airport-specific vehicle that was on radio with ATC at the time and had clearance to cross the runway. Nothing in your comment is correct.
And yet you chose to respond! Indeed I stand corrected on the onsite firehouse, LaGuardia does have one but many airports do not.
And yet you chose to respond! Indeed I stand corrected on the onsite firehouse, LaGuardia does have one but many airports do not.