No, it's not normal. It's an economic activity carried out by producers and rail carriers, but cities inherit the damage and must respond when there's an incident or accident.
To answer the first part of your question, like Mr. Case, we can say that the availability of specialized equipment varies greatly from one city to the next, depending on its resources. Even if a city has a lot of money, it somewhat plays Russian roulette because it never knows what disaster to prepare for. Those disasters can take many forms.
For example, in the past we had the polychlorinated biphenyls disaster. When that happened, we knew what the product was, but we didn’t know how to respond. We intervened with foam, but that wasn't the right way. So even though you have a lot of money, there are dozens of dangerous goods going through your territory and you’re somewhat playing Russian roulette, because you can’t protect yourself against everything.