Never met a 70 year old with dementia so bad that he would just roll up on a three fellas minding their own business and murder them for no reason because he didn't know what he was doing. There should be some legit medical history there is that were the actual situation.
And the story isn't adding up.
I am guessing there was an altercation, When an old man pulls his irons chances are he ain't bluffing. Young fellas take note.
No government employees were harmed in the making of this mess.