john, daily lessons, knife, gun, firearm, argentina, robbed, store, pistol, armed, yesterday, comes around counter, disarm, fist fight, empty handed skills, woman warrior, womens self defense, clerk, aggravated, robbery, use of force, deadly, threat, threaten, nobody gets hurt, shows him, attitude, screaming, each other, yoink, whack, flat, difficult tool, skills, hand to hand