Nuclear Plant Employee Stopped with Explosive Device.

A contract employee at the largest nuclear plant in the nation was stopped at a plant entrance Friday with a "relatively small" explosive device in his truck, officials said.

"This would be no story at all if it weren't for where the man worked," a law enforcement official involved in the case said. [...]

Even if someone were to smuggle a pipe bomb into a nuclear plant, the damage would not be catastrophic, said David Heyman, director of the Homeland Security Program at the Center for Strategic and International Studies.

"The Department of Homeland Security has put in place buffer programs," Heyman said.

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