Public pensions are Ponzi schemes dependent upon an ever expanding population and commercial base to pay the future benefits. So one way to predict which cities are at risk is to look at those with declining populations. There are 59 cities in the US that are loosing population:
http://en.wikipedia.org/wiki/Shrinking_cities_in_the_United_States
The top 10 in terms of percentage loss are:
1) St. Louis
2) Detroit
3) Youngstown
4) Cleveland
5) Gary
6) Pittsburgh
7) Buffalo
8) Niagara Falls
9) Scranton
10) Dayton
So there are dozens of cities that are at risk including major ones such as Chicago, Philly, Baltimore, Cincinnati, and Los Angeles that won’t be able to fulfill their commitments.
As Herb Stein once said, “if something can’t go on forever, it won’t.”
Just add the entire state of Cal to the list
"Slowly I turned....step...by...step....inch...by....inch....