Yes. On the detection side, the space-based system I'm talking about is a satellite system that went up starting in the 1960s or 1970s. We've always received that information. The land-based systems I'm talking about are in Alaska, Greenland, and the northern United Kingdom. They are called ballistic missile early warning system radars.
Those are the land and the space ones that have always been up there for the last 30 or 40 years. That information has always been channelled into NORAD, and we've received that.
The new stuff are the things I mentioned like the ships in the Sea of Japan, a radar system on the land in Japan, and also that x-band radar that sits in Pearl Harbour that then goes up toward the Bering Strait when necessary. Those are the new detection systems geared directly to the North Korea threat, because the satellites and the BMEWS radars are facing Russia.
That's the detection side of things. In terms of the defence, you know the silos are in North Dakota, etc. That's the Cold War defence against Russian missiles.
For the new threat against North Korea there are ground-based interceptors at two locations: California and Alaska, at Vandenberg Air Force Base and Greeley Air Force Base, respectively. There are about 30 interceptors, and the Americans are trying to increase those to 44 by 2017. These are the ground-based interceptors that are designed and meant to respond to a North Korean threat. They're all U.S., of course.