good evening, everyone. i m aaron burnett. outfront tonight, american war ship closing n the u.s. navy tonight is moving one destroyer and one sea based radar platform closer to the north korean pen lans tonight after u.s. stealth fighter jetses with deployed to south korea yesterday. the destroyer, the uss john s. mccain is prepared to shoot down a missile from north korea. let s get to our reporter in seoul tonight. what can you tell us about the war ship? well, we can tell you is that this is a war ship that generally is ported in japan, it ports in japan. it s part of the navy s seventh fleet. and what the defense department officials confirming to cnn is that it will now move closer to south korea. why? it is to monitor any sort of military moves in north korea, specifically any potential