An Interesting Plane

As we left Fairborn, we passed Wright-Patterson Air Force base.  I wasn't going to stop but then I saw an interesting plane.

 This 747 was parked out in front of a control tower.  Except, it's not really a 747, it the E-4 National Emergency Airborne Command Post.  Sometimes it's known as Kneecap and sometimes it is known as the Doomsday plane.  In the event of a nuclear war or other serious event, this plane would carry the President and his security staff.  It was designed to survive an EMP blast and if I remember correctly, could stay airborne for three days.  One of these follows the President when he travels.

 Some C-17 cargo planes.

I was trying to get a better picture of this plane but I couldn't.