When I was 5 my dad brought home photos of a scene he attended as a cop where a kid blew his brothers head off with a high powered rifle, same deal, kids were playing with it. Now that's almost 40 years ago, but I never forgot one of those photos, and I remember my dad telling me "this is why you don't ever play with guns" and we never did, we never touched his guns, ever. Education, responsible storage prevents this types of tragedies.