Firing Problems News Today

Risk if -- if -- kim jong-un launching his nuclear arsenal. >> reporter: experts say the way these missile interceptors work is like trying to knock down a bullet with another bullet. the interceptors have to work flawlessly and tonight a watchdog agency says they may not, and the west coast as a result could be vulnerable. the west coast of the u.s. could be vulnerable just as kim jong-un developinged the ability to strike. hes test firing recalibrating and threatening to attack. as kim jong-un...