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I could only think of Clerks when I read that.
Spot Cash was the biggest grocery store in town and it was right downtown. It's other claim to fame was that on a telephone pole behind it was the siren for the volunteer fire department. With no pager or beeper technology (or at least none that could anyone could afford), the fire department was summoned by a deafening blast from the siren that could be heard all over town.
The funny bit my dad (who had a clothing store across from Spot Case) and the owner of the grocery store had was that once the siren blasted, the owner of Spot Cash would hop in his car, pull up in front of dad's store, and dad would run out and jump in. And then off they would go to follow the fire truck.