so if those satellites are taken out of commission, that can bring things to a halt. and russia is one of the countries out there that is testing weapons that can bring down, can destroy both commercial and military satellites that the u.s. runs. so the big concern about this latest test is, is russia really making progress in being able to do this? one frightening scenario, it is believed that russia has kamikaze satellites essentially, the term used inside the u.s. military. basically russian satellites that functions as weapons themselves. they saddle up to satellites out in space and blow up. glowing concern that this could pose some serious threats. >> and on another topic, tell us about north korea and the concerns about north korea tonight. >> reporter: always a concern about provocations there, but a new concern.