We do have castle doctrine, stand your ground and no duty to retreat here. If you're feeling threatened or in fear you have grounds to use lethal force. Did he? Who knows. The story could be missing information. If the guy came at him with a rock he could have disarmed him and held him until he was carted away to the 5th floor. If he was puffing his chest out because of his credentials, it's wrong. Need more information here.
We do have castle doctrine, stand your ground and no duty to retreat here. If you're feeling threatened or in fear you have grounds to use lethal force. Did he? Who knows. The story could be missing information. If the guy came at him with a rock he could have disarmed him and held him until he was carted away to the 5th floor. If he was puffing his chest out because of his credentials, it's wrong. Need more information here.