Yes. Funnily enough, I haven't heard it stated like that, but as you know, the successful way to reduce the risk when you come home is through family support. But when you come back from a mission, either as a police officer or a member of the military, you don't speak to anybody; you stay in your room, and it gets harder. The poor people who don't have the background education make the situation worse, so that's why they need to be trained.
Can they be upset when you come back and you don't speak and you're crying all the time and you start drinking? Of course. It can be a major stress. As for it being PTSD for the family, the psychologist is better than I am in terms of coming to that conclusion.