It's a weird time to be sure, with all the bad luck and terrible things happening to folks. Doug of course you will express your condolences and sympathy, but I think the most important thing you can do for Dave is assure him that you are there for him, and show him it's true by spending some time with him if and when you can. Maybe offer to go with him to help make arrangements, do whatever you can to make sure he has somebody who cares about him around A LOT for a while. I'm sure he's going to feel all alone, losing a "soul mate" of so many years would be devastating to say the least. Just hanging out with him and helping him deal with all of this would be the greatest gift you could give a close friend, I would think. He may not feel like having company right away, but I would believe the least amount of time he spends alone right now would be best. Just my opinion, thought I'd throw it out to you trying to help. Good luck buddy, it ain't gonna be easy.