John is a refrigeration contractor. He works long hours and has to deal with all manner of systems and customer personalities on accounts ranging from small convenience stores to large commercial customers.
One of his customers is a local Bag-Yer-Own store. It had been part of a major chain but then the company tightened its fiscal belt; the chain stores got fancier and the stores in more urban areas became Bag-Yer-Owns - barebones, self-serve, discount price supermarkets. The manager's main goal is to keep overhead down as much as possible.