Not only were they among the last Boeing 707 derivatives ever built, but they are also packed full of EMP hardened systems and highly skilled crews that would literally hold the world as we know it in their hands during a major crisis. Although advanced and highly secure satellite communications and line-of-sight data-links are critical parts of their capability set, a far more cumbersome system is used to talk to ballistic missile submarines hiding deep below the waves. The deployment of this fascinating capability was caught today by a plane tracker that was monitoring an E-6B operating off the coast...