“Anyone who spends as much time as I do watching The Crime Channel “
Well who can trump THAT kind of expertise?
You'd be surprised how many videos...*very* graphic videos...there are on youtube showing police responses to domestic calls (and other calls). Many of them feature a guy on meth...or with a schizophrenia diagnosis...who decides to point a gun at cops or rush at them with a knife/machete.
Also...I worked in a big city ER for years. I've seen more murder victims than I care to remember. That counts for something.