How do you know he is trained for administering GSW treatment? We don't know the full story here and I was just trying to point out why the protocol is basically to secure the scene and wait for backup when you're alone.
I am only adding these posts for posterity's sake - in MN, there is an obligation to aid individuals who have been harmed and MN officers are trained to do this. Indeed, reports exist of MN officers responding to gun shot wounds (GSWs).
And again I will suggest that and officer will not do that alone, before backup arrives after a shooting like this. I saw somewhere else that once backup arrived they started CPR which would be in line with what I am trying to point out.