From Nextgov.com: Defense plans to install presidential network that can survive a nuclear attack
The White House, Defense secretary and senior leaders will use the system, which will be deployed to ground installations and executive aircraft, including Air Force One.
The Defense Information Systems Agency plans to install a presidential network in the Washington area this year that will be able to survive an attack by a nuclear weapon that generates a high-altitude electromagnetic pulse (HEMP), which can burn out circuit boards and other electronic devices, according to budget documents.