attack. cnn's tom foreman takes a closer look at how the u.s. is beefing up protection against north korea. >> the pentagon is acknowledging that north korea is becoming more of a global threat because of the speed at which it is developing its missile program and its nuclear weapon program. how does the military want to respond to this? at the front line, by going to the pacific ocean where the fear is that north korea on its best day might be able to launch a missile that would go all the way out to hit some parts of the united states. what are they going to do about that? first of all, they want more radar support. they want a new base in japan here, to be tracking early on what's happening. they want to beef up missiles in alaska and california and of course they want steady monitoring from ships at sea, from airplanes overhead and from satellites, all watching to see if north korea is going to launch at some point our way. how would that work? if north korea launches a missile,...