Ptsd due to military service

My boyfriend and father of our soon to be here little girl suffered from PTSD due to his years in military service. Well he recently was medically retired and is still learning to adjust. He is the type of person that wants to figure everything out by himself. He was in therapy and on medication which the VA was nice enough to not cover any longer and change. Does anyone have experience dealing with a loved one with PTSD or know of groups to help?

He is willing to push everyone away in case he can't handle his PTSD. Which no one wants him to do. We have been trying to get his dog trained to help with his PTSD so he can have him but most groups refuse to work with him (the dog) based on what he looks like.