I have little sympathy for him, he is testifying now to try to save himself, he chose to not assist in the investigation, and refused to tell his story to the police, he has had along time like all defendants to prep himself for his day in court,
I would have thought being a police officer who is now saying he mistakenly shot Grant he would have told his story to the original investigating officers, as if he truly believed he had done nothing wrong and it was a genuine accident then what did he have to hide when he was asked to give a statement,
like all defendants police officers or civilians he hid behind his lawyers until he decided when and what story to tell, which is his legal right, but judging him as I do all defendants his non co operation to me points to he knew he had done something wrong, and he is now trying to get away with it,
I don't think his actions merit a 1st degree murder conviction, but I do think they reach the level of manslaughter, possibly 2nd degree murder