I would not go chase after a bank robber period be I armed or he/she/they visibly armed or not ( I _always_ assume a threat to be covertly armed!)
Why would anyone think it reasonable to do different?
My life and I assume this guys and most other folks too, is much more valuable than a corporations insured bits of paper and metal.
Would this guy think to go chase after some robber of bearer bonds or how about a random car thief; Both of which being items that likely have greater real value than any amount of teller drawer money he might score from a branch location.
As to right, wrong, law enforcement and punishment...That is the place and task of police.
I am not a police.
That the robber shot at him was IMHO a wake up call for him to;
STOP!
Think (About what he's doing, for why and what his family might have to say if he is killed or disabled for life!)
Observe (Be a good witness) & Orient (Place ones self behind good cover or concealment at the least)
Plan (A means to _survive_ if not escape toward this imminent threat)
S.T.O.P. ~ It can literally save your life, which is first and foremost ahead of easily replaced/repaired man made products and things.
https://safety.army.mil/LinkClick.as...0%3D&tabid=757
- Janq