Review will look at how it concluded detainees yielded valuable information . Inquiry to also look at whether coercive techniques yield useful information . CIA Director Leon Panetta vows to apologize , tells staff goal is not to punish anyone . Kit Bond , the committee 's ranking Republican , said in a statement Thursday . Senate review is expected to take about a year to complete .
Review will look at how it concluded detainees yielded valuable information . Inquiry to also look at whether coercive techniques yield useful information . CIA Director Leon Panetta vows to apologize , tells staff goal is not to punish anyone . Senate review is expected to take about a year to complete .