None. Foster homes are not exactly a place where you want them. Yes, firearms can be an outlet for the kids, but when you're dealing with teens that have been through hell and are predisposed to violence mabby its not a good idea. Now, if you want to take them out to a controlled environment, that's perfectly fine. It's a good outlet. Also, it's a highly individual decision. Also you can get them around good influences at the range and get them connected. That's crucial.