I use Tekkit, Technic, and other related modpacks to create the enormous and elaborate builds, like a missile silo that used Redpower frames to open the Silo Hatch so that, in theory, a missile could be launched. Of course ICBM wasn't in Tekkit, so I couldn't make it actually launch a missile. If you think that my build should be able to launch a missile, then go to my one post in the cafe lame and either reply, or make your own forum post that says pretty much the same thing as mine.