During the sixtes the Army used to transport nukes on truck through various towns. Their was even a report that the Military was missing something like 10 to 20 wareheads. In college I remeber an Iranian spoke up claiming that he and his friends had stolen some war heads. (back then I was pro anything america does and me and some of my follow ROTC friends beat the carp out of him and truned him over to the CIA). Were the wareheads stolen or an accounting error I do not know, but their were fears that some nut group on the left would use the treat of a nuclar weapeon to hold up a city etc.