gain space, reholster or find obsticles to put between the 2 of you. if unarmed you cannot use deadly force(atleast in my state) . Ir will take em longer to pick up a weapon than it will for me to draw. Also , if your gun has it, be sure to put the safety back on. I have L.E. training , so hand to hand is an option if need be, abeit a last resort if possible.