my father has battled ptsd (warzones) for my whole life..
this is a difficult one...
but i can only speculate as not having endured his nightmare..
he would have been better off
*looking after his health
*not adopting the "hardman" approach ie talking to his family, making new friends, allow people to understand his fears
*not self medicating with alcohol
*allow the people who love and cared to help
thats the best i can offer
all the best