Used to work for a private Medical Center in Boston and, when we had a fire alarm at one of the buildings, the BFD always had to back the rig out when leaving. Thus, myself and the BFD guys would go out and stop traffic both ways to allow for the truck to exit. (we were cross sworn as Suffolk Deputies as well so we could coceivably go on the street even thought we always stuck to our property) On more than one occasion, I got some snide comments from a few BPD cars that happened to be going by; such as "Get off my street" etc. I always took it with a grain of salt as maybe they thought I was on a detail or something. With that said, if I saw something or someone that needed help, I always at least made sure I was in the area. Most times, a simple head nod or thumbs up and I was on my way.........