It sounds like a difficult situation. Like others have said, I don't think that there is a lot you can do. You can pray (if that suits you), lead by example, and be there for them if/when they ask for help. I doubt anything you could say/do would change there behavior. This is just my opinion, but I would not call child protective services under any circumstance other than physical or sexual abuse. Raging alcoholics or not, they are still parents. The entire experience of the kids going through the beurocracy of social services, or even in the extreme being placed in a foster home, can be an extremely traumatic experience. I saw one poster recomending this and I just couldn't disagree more. But I don't have all the answers and it does sound tough for everyone involved. All you can really do is work on your own sobriety.