I can tell you this, that cop is cowardly loser and should no longer be on the force. That is the type of guy who has the potential to "accidentally" shoot a person.I think the issue may also lie with the training and tactics used by the police force, and the cop might have been following departmental procedure - in which case the training needs a major overhaul. We'll see what happens as a result of the investigation. Meanwhile, I think a post saying the cop should take a dirt nap is over the top by any standard and out of line on this forum.
I'll tell you what, I know a dude who works within the Sheriff's office and he is definitely not fit for the job.
Reviewing tactics and all that will do nothing, it is a top to bottom cultural problem, and not in just law enforcement.
A good example - look where Bob Ricks from Waco fame ended up:
http://www.youroklahoma.com/homelandsecurity/