The public should have access to a summary report that provides some details of what EXACTLY happened in this case.  The two fallen troopers knew they were being dispatched into a hostile situation and that at least one gun was involved.  They consulted with the VPSO before going to Arvin Kangas' house.  There's a lot of information that's missing in this published story.  To say the troopers weren't "aggressive" is hard to believe.  They'd have to be if they knew there was a possibility of arresting someone.  I'd like to know how the shooter managed to get behind the troopers and open fire.  I've watched Alaska State Troopers many times, and in dangerous home situations the troopers always appeared to take special care not to permit a dangerous situation to pop up behind them.  Perhaps that's just for TV.  I'm not condoning the shooters actions, nor am I saying it's the troopers' fault for losing their lives, but I'd like to know more about how can this type of situation be prevented.