hypothetical armed robber unaware of you
Hypothetical scenario: you are in a bank, store, or other business establishment. A person is holding a gun on a clerk, for a stickup. The BG is unaware of your presence and armed status. There are no non-belligerents behind the BG (in line with him), and you are somewhat behind him. What do you do? I have given this some thought, but I will hold my opinion until receiving some others.