and he's focused on me, and he's at thisgate where he looks like he is about to run, he has a possibility to get this burst out. if he gets this burst out at this point when i pulled the shot gun i wouldn't have time to react if he wanted to get on me or to pull a gun or have a knife or if he wanted to do ill will. at this point, i would -- this is when i needed to show him to -- to deter him to stay -- to do not come at me. >> do you know -- how do you know at this point you have to do that? >> because everything that's happened, him closing in on me. >> how do you know at this point you have to raise the gun or he could be on you like that? >> training. there is a thing called a actualer drill. a 21 foot rule. it has the average person -- it takes 21 feet for somebody to react if somebody -- an average of 21 feet for somebody to react torque pull a weapon and fire two shots at somebody that charges you with a knife or anything like that. mr. arbery is already running. he's at a pretty good clip. he's directed at me. he sees that i have a weapon. i am yelling at him to stop. and he's con