I wasn't commenting about his firearms training so much as I was his "use of deadly force" training. Was he aware of his backstop and beyond? Did he care? Did he have communication with responding officers? Did he know where they would be coming from and what they'd look like? Obviously, the answer to some of these questions is a resounding NO.
And I do advocate training for people who want to carry firearms for self defense - I think they should be instructed on the legal uses of lethal self defense, as well as the laws pertaining to the firearms they wish to own.
Also, I ask again, how would you feel if Horn had killed the undercover officer, thinking he was part of the burglar's crew? Or an innocent bystander accross the street? It's fairly obvious that Horn was in a fairly agitated mental state...
I hope no one is taking my displeasure with Horn as support for criminals, for that is certainly not the case. I am also not advocating "hiding and cowering" as a method of protecting yourself, or anyone else's life. I simply think that this man, in this case, was well outside the bounds of self-defense, and that he intended to (and did, in fact) commit murder.