They had one a month or so ago here in Malden MA. The engine and ladder truck were pulled out for the kids to climb into for photos. In the bay, they had an old pullbox demo showing the box, relay, and gong. They also had the smokehouse (a trailer with a fire safety tour; the last room has a smoke machine that fills the room with non-toxic smoke, and the firemen help the kids out the window and down a waiting ladder. They had demos that they did twice during the day - they lit a junked car and then extinguised it. Then they used the jaws of life to pop the doors and remove the roof. They demoed the effects of an M80 on an orange and an apple to (hopefully) scare kids away from playing with fire crackers, and had a line that the kids could use to squirt the side of a nearby building.
Oh yes, the local pizza shop donated pizza and someone donates slush and punch, so there were free snacks.
