There is more to this than what at first meets the eye!
First of all, this Man most probably had Post Traumatic Stress Disorder, so He probably Legitamatly thought He was training, as He put it.
Second..., He may have thought that He was somehow 'helping', although in what sense-I can not be sure.
Third, IF He shot first, and ONLY IF He shot first, then the Shooting would be Justified under Utah Code 76-2-404 AND 76-2-402.
NOW..., I personally believe that if The Officer came up to the Man in a nicer manner, because He obviously was in OUR County Military Uniform, then, this may have been prevented altogether. After all..., there IS a chance that He may not have shot IF The Officer did not say the usual things such as, 'Put your Hands up!', or 'Do not move!, etc.. Something along the lines of (***IN A FRIENDLY MANNER***): ...' Hey Buddy... how are you today? Could you come over here to talk?/Can we come over there to talk with you? Everything is OK..., we are just here to make sure everything is OK. Are you going somewhere?/Do you need a Ride?
In by doing this, the Shooting MAY have been prevented altogether.
NOW..., if He were to lift up His Guns, aim them at the Officers (or other People), etc., then, all Bets are off.
Every Law Enforcement Officer in this Country needs to thake Classes that teach the Officer to differentiate between someone who INTENDS on doing Harm, and someone who MAY do Harm, especially when dealing with someone who has 11 fully Loaded Clips for The AR-15, or someother type of so called 'Assualt Rifle'.
After all, walking down the Road in Salt Lake City, Utah with a so called 'Assault Rifle', is not against the Law so as long as you are not a Prohibited Possessor, or the 'Assault Rifle' itself is not Loaded. The correct Utah Codes governing this situation are, in order: Utah State Code 76-10-500, Utah State Code 76-10-502, and Utah State Code 76-10-503.
A possible Charge of Utah State Code 76-10-507, a Class A Misdemeanor, could potentially apply, but only after the initial conversation establishing His Intent was proven/given.
I truely believe that this could have been, or may have been, entirely prevented. Now, Police, and the Public at large, although it is hard to do, I know, needs to give up the whole 'Columbine High' mentality, whenever they encounter someone who is Armed like this while in Public.
Like I said.., I know that it would be a hard thing to do, but everyone needs to try.
Again, Police Officers/Police Agencies need to take extra Classes on learning how to go about these potentially dangerous situations a little bit better. I DO NOT buy the whole..., 'We might have saved a lot of lives tonight...' [crap], BECAUSE; the Man had already talked to People at The Hotel with no Hostility or showing signs of Agression.
He honestly thought He was Helping, in some fashion or another, and until anyone can prove me wrong, The Officer should be found Guilty of Utah State Code 76-8-201, BECAUSE; He probably intisgated the encounter, by NOT disfusing it, based on His demeanor, must probably, on how The Officer approached the Man. Case and point, if The Officer appraoched The Man, with a Service Pistol aimed at Him, due to His [The Uniformed Man] Post Traumatic Stress Disorder, His Disorder, which is a Legitimate one, clouded His Judgement, and probably, as crazy as it sounds, thought The Police were there to harm Him. Due to this..., He shot first, thinking His Life was in Jeopardy, but it never was, pending His actions.
If you have Served in our Military, then, I trust that those Service Members will take up my Arguement in favor of that Man for the reasons listed above. If you have not Served in The Military, then, in all accounts, you will not better appreciate my Argument in The Uniformed Military Mans Defense, unless, or until, you either Serve, or know some with Post Traumatic Disorder who has.
In short..., I think The Man really thought He was either 'Training', as He put it, or really was Helping, in some fashion or another. This Case is really sad...