I found each of the three stories in the book to be interesting and instructive. They are tales of people aiming at short-term results, while letting the future suffer. In the case of the NYC Subways, the plan sponsors finally fought back. With GM, they accomodated until they were nearly dead. With San Diego, they compromised until it cost them their bond rating, and many people involved got sent to jail.
If you want to buy this book: While America Aged
This book describes the motives of all of the parties in DB pension issues very well, and why they tend to lead to DB plan terminations. There are possible solutions recommended at the end, but in my judgment they might save some plans that are marginal, but not those that are sick. If you are interested in the topic of pensions, buy the book: Pension Dumping