I haven't read all of the posts (have to go to work),so forgive me if someone has already posted this, but I do know of a great agency made up of first responders. Someone is there 24/7 to talk to and possibly give vetted referrals to those that need local help....someone to talk to. I've called them before and they are fantastic. It's called safe call now. safecallnow.org.
Just putting it out there. They helped me recently with this very topic. I attended the funerals of two friends, this past weekend, that committed suicide.
Something that people are reluctant to talk about is survivor guilt. "Why didn't I see?" "Why wasn't I there?" "Could I have done more?"