There are no pat answers.
 There have been incidents in which an adolescent has been able to access a gun and effectively protect other family members.
 But kids have friends visit and there may be other visitors in the house, perhaps with children, at other times and for other reasons. And it takes just an instant for something very bad to happen.
 And the law is what it is, so they can be potential criminal liability hanging over one's head.
People will have to weigh the issues and make a decision that they will be willing to live with.
"It is long been a principle of ours that one is no more armed because he has possession of a firearm than he is a musician because he owns a piano. There is no point in having a gun if you are not capable of using it skillfully." -- Jeff Cooper