No stories, but target verification is rule 1. I'd also make a point to find my kids, or know exactly where they were, before firing a gun in or near the house.
Sad, sad story. Makes me cry.
The gun control nuts will seize this. However, it is a case of not being properly schooled in firearm safety and techniques (target verification, as previously mentioned), or knowing better and panicking (which is inexcusable). That being said, there is nothing the courts can do to this man that will be anywhere near as bad as what he will do to himself every day for the rest of his life. Our prayers should be with this family. May the little girl rest in peace. This is just so awful.