Unexpected, yes, but it does make sense. When you consider how many people must have been brought here because of things they did in the line of duty... some would have a vested interest in protecting others, and some would just be too used to the life to give it up.
It's a good thing to know about the place, anyway. [If he'd had any thoughts about getting close to people here, that would've erased them. He's already lost, or almost lost, too many people.]