"the man was intoxicated and unable to hear/obey his orders to leave. Wondering if the man was in need of assistance, he approached the individual, knowingly placing himself within dangerous proximity should the man attack. Placing the man's welfare above his own, he walked closer to better communicate with him and determine whether medical assistance was needed."
This possible scenario, if true, still does not negate the main issue of whether the use of deadly force was justified, when other less-lethal options were available.
Once again, your responses slowly uncovers your firm bias to the use of deadly force for any circumstance and that the use of less-lethal means of defending oneself against an unarmed opponent is never appropriate.
I guess a number of members of this forum is just hoping all law enforcement officers behave as Judge Dread of DC Comics, where cops function as judge, jury, and executioner. Well, just remember you will be dealing with those same type of cops if the government decides to confiscate your firearms and you try to resist.