The National Missile Defense System at Fort Greeley is a mid-course interceptor ... the Aegis SM-2 or SM-3 is the boost phase interceptor. Either one should be capable of swatting Li'l Kim's rocket out of the sky.
Check the link in post 21. The Aegis can be used in mid-course or terminal. Airborne laser and kinetic weapons (under development) are the boost choices.