Tom Carper actually said...

"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?"

"Give us some idea how often these reports to police and to the NRC come in for devices that are missing or are believed to be stolen?"