Electronic System for Travel Authorization, June 5, 2013, PDF, 8 pages, 293 KB.  U.S. Customs and Border Protection (CBP) is publishing this update to the Privacy Impact Assessment to provide notice of a new information sharing and access agreement with the National Counterterrorism Center (NCTC) due to the March 2012 release of the Guidelines for Access, Retention, Use and Dissemination by the National Counterterrorism Center and other Agencies of Information in Data sets Containing Non-Terrorism Information (AG Guidelines).  (June 5, 2012)