I don't usually post but this one I feel I can at least chip in. In Dutchess county with the exception of the Big 3 career departments, at least a few of the volunteer agencies do roster their ambulance, on the over night, when most commercial ALS agencies will be coming out of the City of Poughkeepsie, or up in Red Hook. However many departments are now going to also having at least 12 hour dedicated ALS units, that work when the majority of the Volunteers are at work. But beyond that, it comes down to the crew, we have crews that stay at the fire house on their nights, and get off the floor sometimes before county is done dispatching, but there are also crews that take 2nd, 3rd dispatch to call out Driver/EMT alone, let alone get the rig off the floor.