poppycock. was this guy in fear for his life? were these officers advancing on his house with the intent on completing a violent crime? i am not all too familiar with this doctrine you speak of but i assume it is not carte blanche to shoot someone standing on your lawn.
Well, supposedly at least one of the cops was hiding behind a tree.
Is I saw somebody on my property hiding behind a tree, I would be quite concerned, especially if I was 81. Maybe you've heard of home invasions, especially in drug neighborhoods?
Then butt out until you are.