Tom Carper actually said...

"How do the safeguards that have been described here this morning, how do they compare with safeguards that are in place in other countries around the world?"

"What would be 'fairly often'? Every year or two?"

"There really is no excuse for the kind of vulnerabilities identified by the Government Accountability Office."

"Are we aware of any effort to actually mount an attack using a dirty bomb in this country or another country?"