Mount Horeb is an interesting Fire Department. It's a little town in the midst of a farming community in Dane County, Wisconsin (just outside of Madison). They are known for their all black trucks, which dates way back.
They also have an incredible collection of warning devices-- lights, sirens, you name it-- adorning the walls of the firehouse.
They like their sirens. From what I remember, (I visited there in 1997), the old rescue truck had 2 Q's on the front. One of their other vehicles had two B&M Super Chiefs bumper mounted.
The guys I met that day were really nice-- they showed us everything that they had.
I think it is more for "buff" reasons than anything else that they have so many sirens on their rigs. It is kind of cool, though overkill to the max!
Check out their website,
http://www.fdmh.org/
John