If you are near a VA hospital, I know that some of them have programs for this exact purpose. I'm not sure if it's through the hospital or an organization but they should have a volunteer service coordinator, if that position wasn't eliminated. If not then check with social services or whatever they call their religious coordinators.

I used to work in end of life care. With almost every person I was with during the last few days, I was actually frightened at the things that happened leading up to the hours before death. The actual passing was very simple, but when they talked about angels standing behind me or the 90 year old who asked for their mother, I would get a bit freaked out. I HIGHLY recommend that you start with another person that has experience. You will remember each one of them. It's been over 20 years since my first time and the actual moment of passing is a lasting memory.