The train incident is negligence on the part of the driver. He never intended to hurt anyone but himself, so there was no intent, but the accident was still caused by him.
The absence of intent means that he was criminaly negligent. Had there been intent, it would have been a different thing.
The Nichols situation shows negligence on the part of the authorities. They never intended what happend to happen, so there was no intent, but they share a huge portion of the responsibility for what happened.
Once again, there is an absence of intent. I don't know if they were criminaly negligent, and regardless I can't see them ever being held to that level of accountability. However, if I'm the family of the federal agent that was killed I certainly am consulting with lawyers over a possible lawsuit against the county.
The initial point I was making, was that people don't have a standard level of accountability. In the trian incident, people were saying he should have known what could have happend, and that his mental state wasn't an excuse. Well, why aren't those same people applying that same standard of accountability torwards the authorities in Atlanta? They should have known what could have happend if an inmate got a hold of a weapon, and they didn't take very smart measures to stop that from happening. Even when warned about it. This didn't come out of the blue.