“and gambling that the intruder crouching in the corner doesn’t have a weapon - and giving him time to use it.”
If I’ve already got my weapon trained on him, it’s not much of a gamble.
“Then when the guy comes at him - reasonable to assume he’s an intruder and has the right to protect himself and daughter.”
Meh, the father says he came at him, but we have no other witnesses to confirm that. Anybody who just shot someone in a case of mistaken identity might conjure up such a tale. Police do it all the time.
There it is the “intruder’s” fault for putting himself in a situation he knew was dangerous. Did he not think it dangerous he would not have been crouching in the corner.