You understand. We do our best, but usually miss. These guys missed 14 times anyway ~ we have only the word of a notorious drug smuggler that he was there to get shot.
Listen, I don't care who you are, you don't shoot a fleeing man in the back and not expect to go to jail. Period.
Hell, there is no question the guy fired his shotgun fifteen times and finally hit him in the ass.
Sometimes you end up in jail just because you are stupid. I hate it was BP, but any other cop in the US that did the same thing would be paying the same price.