Aegis SM-3s have kill vehicles that are not aerodynamic and are incapable of intercepting anything in the atmosphere.
And current SM-3s do not have the ability to intercept an ICBM in ascent phase, and can’t reach the altitude one flies at in midcourse.
See slide 15:
http://www.dtic.mil/ndia/2011IAMD/Pandolfe.pdf
The SM-3 Blk IIB can get an ICBM in ascent, but those won’t IOC till 2018 at best.
So there is absolutely nothing we or the Japanese have that can shoot down this launch unless it has an early malfunction and falls towards Japan, OR it is aimed towards Alaska - the GBIs there would have a chance.
The hysteria has gotten even worse:
The PAC-3 system will be placed adjacent to Defense Ministry HQ in Ichigaya (Tokyo). The Japanese are going to put a Patriot battery in the parking lot next to their “Pentagon”.
I am so sure they want to launch a missile from there, LOL.