Except if you have a spy in the group that transport the bombs, they just tip off some people with guns to grab it. And given the number of Islamist extremists

Except if you have a spy in the group that transport the bombs, they just tip off some people with guns to grab it. And given the number of Islamist extremists in Pakistan and how much they would love to have a bomb, it seems rather likely that sooner or later they would get a spy installed.