Breathe a bit more folks. Just breathe.
While I haven't checked the Floating Golf Ball's present location, it was hanging around here through last weekend.
My bet is that NK will abuse their tunnels and drop Seoul a few dozen meters long before they send up a rocket on a long distance crap shot. Yes, they have rockets. Yes they have the physics packages small enough to go in them. The question is do they have the accuracy to get one over here and hit something substantial on the FIRST ATTEMPT and make it count. If they blow up one 500+ miles off of our west coast, it will be EASILY tracked, and we WILL retaliate. If they end up going 500+ miles INTO our borders, then we will DEFINITELY smoke them as any attack using NBC guarantees a counter strike of massive proportion.
Now, picture Un sitting over there under his bad haircut, thinking of what he could do with his new play toys: He could go after us directly, and risk having us come back intensely. OR, he could slip one or two down a few tunnels, and give a few SK cities near his border the atomic upsi-daisy, followed by blowing one up under the DMZ. SK would be in complete confusion, NK would run across the newly cleared border and start trying to take SK over, and the financial markets of the world would vomit profusely. And before you start thinking too far about the fallout and radiation, it would be minimized because of the underground detonations, so the path would be fairly clear for them to start running southward rather quickly.
Again, ask yourself what Un may be thinking right now, and then look at the easy approach to what he wants.
Loup