I'm new here after a long time lurking, so perhaps this isnt the best place to post first, but a thought sprang to mind that doesn't seem to have been brought up...
With ALL due respect to the deceased an injured, the man who will apparently be charged had a DUTY to shoot people under certain circumstances. In the UK it is rare to find someone carrying a loaded assault rifle in a non-training environment without good cause. Now, the overwhelming evidence is that this young chap for whatever reason killed and injured innocent shipmates for some reason which may forever remain locked in his own head. But justice demands that we not jump to conclusions. With no other evidence to go on how do a bunch of know-it-alls on a message board NOT know that the young man was not carrying out his duty to protect the ship? SORRY...BOAT.
Obviously this doesn't appear to be the case, but it would be piss-poor policing to not at least look into that possibility.
As we say here state-side.... just sayin'
cheers