A friend of mine used to be a nurse at the violent offenders assessment centre at one of the major UK secure mental hospitals. (He was the only nurse I know with full police riot training)

He used to take his anual holiday two days at a time over the full moons to avoid the worst excesses, he reckoned that if he worked then, one of these months he'd end up on the other side of the bars because the inmates were just to difficult to deal with during that time.

Any idiot can face a crisis - it's day to day living that wears you out.