U.S. to bolster missile defenses to counter North Korea threat: Hagel

Hagel said the Pentagon would add 14 new anti-missile interceptors at Fort Greely in Alaska - an effective reversal of an early Obama administration decision - and move ahead with the deployment of a second missile-defense radar in Japan.
The Pentagon also left open the possibility of creating a site on the U.S. East Coast where the Pentagon could field more interceptors capable of striking down an incoming missile.
http://www.reuters.com/article/2013/03/15/us-korea-north-usa-defense-idUSBRE92E0SV20130315