CIA director John Brennan told a congressional hearing Tuesday that security operators involved in Benghazi rescue efforts were required to re-sign non-disclosure agreements because the documents were being updated. Brennan was pressed by Rep. Devin Nunes, R.-Calif., of the House Permanent Select Committee on Intelligence about the 2012 Benghazi attack and why the security operators who were involved in rescue efforts that night were asked to re-sign their non-disclosure agreements. “There were a number of contractors whose contracts were being updated, amended,” Brennan said.“And any time there is an amendment to a contract, there's the requirement for a non-disclosure agreement...