Growing up both my parents were patrol with Anchorage Police. My dad ended up a LT. when he retired. He shot a guy at one point in his career. It was a Domestic disturbance, guy came at 3 of his officers with a knife, he shot twice center mass. He was put on leave with pay, psych eval, court case, justification, etc.. He said that was the low of his career, never drank so much scotch. For all good cops out there, its not a position anyone wants to be in. You are there to protect not kill. Guy ended up living, all court cases were thrown out.
I feel for both departments, both officers; loss of life and use of deadly force. Its a bad place to be and the family that was left behind, my prayers go out to you.
Having to deal with that aftermath is complete BS.

This is a good quote, one of my favorites. It was on my fathers retirement plaque:

"It is not the critic who counts: not the man who points out how the strong man stumbles or where the doer of deeds could have done better. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood, who strives valiantly, who errs and comes up short again and again, because there is no effort without error or shortcoming, but who knows the great enthusiasms, the great devotions, who spends himself for a worthy cause; who, at the best, knows, in the end, the triumph of high achievement, and who, at the worst, if he fails, at least he fails while daring greatly, so that his place shall never be with those cold and timid souls who knew neither victory nor defeat."
-Theodore Roosevelt, Chief of Police 1910