Thanks, I thought that would be the case, but no being a LEO I figured best to check. The articles seem to be sort of stressing that point a little. If it's SOP then it's not anything out of the ordinary.
You need to have an outside agency or someone outside of the officers chain of command look at a shooting to make sure it was all above board, it's fairer on the officer who then knows he's in the clear, there's no suspicions or blame hanging over him/her. It's fair for the public as well to know that officers aren't taking the law into their own hands. if it turns out to be unjustified people need to know that too.
I imagine that the articles are stressing it to show demonstrators and others perhaps that it won't be whitewashed and proper procedures were in place.