<Not T but...
Basically N. Korea's all pissed off because of UN sanctions because of the nuclear tests they did in April and May. There have been some reports that say N. Korea's prepared for another test and, since they have sworn to increase the size of their nuclear arsenal and threatened us, we're putting an anti-missile defense around Hawaii.
A few years ago they tried a test fire in our direction on July 4 but the system failed just before launch. At the time their farthest reaching missile could travel about 4k miles, which would fall about 500 miles short of Hawaii if they did, in fact, aim it at us.
So basically, the secretary of defense is talking with the S. Korean government to gain their opinions on the matter and loading up a bunch of defenses for our side which are capable of shooting a missle out of the air. Still get some crap that way, but better in the ocean than in a volcano.