FILE - This Nov. 6, 2013 file photo shows National Transportation Safety Board (NTSB) Chair Deborah Hersman speaking in Washington. Federal accident investigators called Thursday for a probe of the ... more 
FILE - This Nov. 6, 2013 file photo shows National Transportation Safety Board (NTSB) Chair Deborah Hersman speaking in Washington. Federal accident investigators called Thursday for a probe of the government agency charged with ensuring the safety of tour buses, saying its own look into four crashes that killed 25 people raises "serious questions" about how well the agency is doing its job. The Federal Motor Carrier Safety Administration needs to crack down on bad actors in the tour-bus industry "before crashes occur, not just after high visibility events," said Hersman, chair of the National Transportation Safety Board. (AP Photo/Susan Walsh, File) less 
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Associated Press | Photo By Susan Walsh, File
Thu, Nov 7, 2013 1:11 PM EST