Location makes all the difference in the world. My assumption with this scenario is that it was not within your home, but I may have assumed erroneously. In Florida, tho, shooting someone breaking into your home is doubly protected since we have the "stand your ground" law as well as the right to use deadly force to stop a forcible felony - including burglary. You may be right that someone advancing toward an armed person is intent on assault. The question becomes is the use of deadly force against a single unarmed attacker justified? Again, my POV is that I'd rather shoot the attacker while he is still armed.