A 75 year old man, who may be a trained combat veteran, denied cancer treatment can be a very dangerous commodity. Nothing left to lose.
If you get a whole mess of men like these, things can get rather dangerous for those who think themselves as our "betters".
Just sayin'.
The next time you go to a gun show, look for someone selling reprints of Army Field Manuals. Lots of potentially useful information in those.
Also: do not order those items online.