Thanks Cat Lover 58... it's much appreciated.
Thanks again Yagr for the good advice. I talked to the chaplain's office this afternoon and got everything figured out, and just got off the phone with my brother. I am so glad that the chaplain was there with him, because he was really, really upset (as you'd expect), and clearly sad/mad at himself for being in jail when this happened and missing the memorial service. It was good to get to talk to him, as he was just picked up not too long ago, and he hadn't received my letter yet, and couldn't remember my address to write to me.
Still, one of the hardest things I've had to do. But, definitely much better than telling him in a letter. I'm now trying to see if my mom wants to maybe stop by and visit with me. I know he wants to see people.
Thank you all again for your kind thoughts and caring words, they really mean more than you know.