Far worse was the retired fire marshal who died in June. Like many of the others, he was too young to collect Social Security. “When they found him, he had no electricity and no running water in his house,” said David Anders, 58, a retired district fire chief. “He was a proud enough man that he wouldn’t accept help.”

The situation in Prichard is extremely unusual — the city has sought bankruptcy protection twice — but it proves that the unthinkable can, in fact, sometimes happen. And it stands as a warning to cities like Philadelphia and states like Illinois, whose pension funds are under great strain: if nothing changes, the money eventually does run out, and when that happens, misery and turmoil follow.

It is not just the pensioners who suffer when a pension fund runs dry. If a city tried to follow the law and pay its pensioners with money from its annual operating budget, it would probably have to adopt large tax increases, or make huge service cuts, to come up with the money.

Current city workers could find themselves paying into a pension plan that will not be there for their own retirements.