Something else to research given the first sentence below:
There are some other issues I’d love to discuss here, but for reasons of officer safety and tactical advantage I just can’t. I will say this, though: stay as far away from your assailant’s head as you can. If you can imagine a triangle running from the outside corners of his or her eyes down to the bottom of their nasal septum the cartilaginous wall between their nostrils, that will be the shot target should police be forced to engage with firearms. The reason is that bullets to this area have a better chance of producing an immediate kill, without even a flinch reflex, which might cause the person to pull the trigger of the gun they have to your head post-mortem. Or so I was told in Academy; I’ll grant that my instructors weren’t medical doctors.
via How To Respond If Somebody Holds A Gun To Your Head – Business Insider.