There was a story about a year ago of a Roseville police officer (gun expert, no?) who's daughter picked up his loaded weapon and put a .40 round right through her stomach... intestines all over the ground. She lived about an hour after that.
Also a story about 2 months ago about a police officer (gun expert, right?) who left a gun in a glove compartment... his son found it, and killed his sister with it while he was running an errand in a nearby store.
http://www.q13fox.com/news/kcpq-chil...,5586454.story
Anyway, every month or so there's a headline about someone accidentally killing someone with a gun... Gun advocates typically will use the analogy of "well, why don't we ban knives too? If someone's going to kill someone, they're going to use whatever means necessary..." There seems to be a lot more accidental shootings than accidental knifings.