I agree, this thread is totally appropriate.
It seems from the article, though, that this was a failure to follow basic rules of firearm safety - both on his part, in that he left the loaded firearm sitting around, and on the part of the woman who shot him. You treat any gun as if it's loaded, and you never, ever point a gun at anyone or anything you don't intend to shoot.
For me, the reality of this situation is that it is an absolute tragedy that may wind up ending two lives. His, obviously, and the woman who is now facing manslaughter charges. If the article is right, he was working on bettering himself as a Paramedic, and may have had a bright future. Now that won't happen. But that has little to do with the gun - he could have just as easily been hit by an inattentive driver while stepping out of an ambulance, or fallen down the stairs. I think we should avoid the temptation to wave the bloody shirt and scream how this makes guns inherently evil.