My neighbor got home recently; he was in Iraq as a plane mechanic and he retired this year (think he's in his 50s or 60s?) He was pretty shaken up though he didn't let it show mostly; he had a nervous breakdown and I think he attempted suicide; not 100% sure what happened but the awesome thing is, my boyfriend and him have really bonded.
It is def. true that we need to be there for those who come home after service.