It's been my experience that those who are truly serious about suicide work very hard on not letting anyone in on it. From your story it sounds to me as though he'd been planning on it for some time, and that it was very important for him to see you and the other friends that he invited, one last time. With all of the determination it must have took for him to not let out a tear or a flag sign that he wanted to die, and all of the determination it must have took him to go through with it, he could have used that same determination elsewhere. He could have gone back to AARC one last time, and faked that he was ready to seek help, just to say goodbye. I would assume that it wasn't what he wanted.
Even though I hardly knew Brian, it's still heartbreaking. I wish that all of us, from The Straights, or Kids, or AARC, or whatever, could come out surviving together.
"Mini Vause" did my assesment, and ran most of the raps until I was on about level three. A new Mini Vause is taking P.S's place, returning to school and all incase Miller Light retires.
Thank you for posting your story.