[wardaddy]

I think if one is armed and in the presence of someone killing another person that it's reasonable to assume that one may use deadly force to stop it unless that person is a cop.

That Miami story reminds me of the crackhead bank robber who rode his bicycle to the bank armed with a fake gun and with a manhole lid strapped to his chest as makeshift body armour. He was caught fleeing the bank on the bike making a rather slow getaway burdened with the 90lb manhole lid and the red dye spewing bag of money.

[Travis McGee]

Now that's a mental image!