"The struggle continued as Daniels reached for his own gun. Images released by the Sheriff’s Office showed deputies with their hands on the pistol and Daniels gripping the gun beneath his red shirt.
In that struggle, Salazar said the deputies were “pleading” with him to let go of the gun.
“It was very clear they were in a fight for their lives,” Salazar said.
Body camera footage of the encounter, which lasted more than 30 minutes, showed Daniels was carrying a Glock Model 22 .40-caliber pistol. He also had a second magazine and a knife."
-- from the OP's article.
Sure doesn't sound like a murder to me.
It also doesn't sound like the veteran was getting the help he should have got. If we can't afford to take care of our veterans we don't deserve a military.
It isn't the job of the police to give mental health treatment. Police were called to deal with an armed suspect who was putting people in fear, they must think of their safety and the safety of by-standers first.
If you are interested in getting better mental health treatment for veterans (or non-veterans), you need to speak to your elected legislator, not the police.