That's nothing. In the US, we fly nuclear warheads across states. http://www.msnbc.msn.com/id/20427730/
The point is that you can arm a British nuke in 98 with a bicycle lock key and no tamper-proof mechanism was there. So if you got a warhead detonation was easy. In the US having a warhead is pointless, you need the codes or the bomb is worthless.