terrorists, terrorist groups, and worldwide terrorist incidents; supporting the response to terrorist incidents in the United States and worldwide; and writing assessments and briefings for policymakers. After the Christmas 2009 terrorist attempt on Northwest Airlines Flight 253, the NCTC was tasked with creating a process to "thoroughly and exhaustively" prioritize terrorism threat threads; identify follow-up action by intelligence, law enforcement, and homeland security; and enhance the "Terrorist Identities Datamart Environment" database, to add names to watchlists. Terrorist Identities Datamart Environment The Terrorist Identities Datamart Environment (TIDE) is a database compiled by the NCTC containing over 1,200,000 identities of individuals suspected of terror links and domestic individuals of interest including the names of known or suspected terrorists as well as those affiliated. Leadership Directors Source: John O. Brennan (Interim) (August 27, 2004 – August 1, 2005) Vice Admiral (Ret.) John Scott Redd (August 1, 2005 –November 10, 2007) Michael E. Leiter (Acting) (November 10, 2007 – June 12, 2008) Michael E. Leiter (June 12, 2008 – July 8, 2011) Matthew G. Olsen (August 16, 2011 – July 2014) Nicholas Rasmussen (December 18, 2014 – December 24, 2017) Russell Travers (acting) (December 24, 2017 – December 27, 2018) Joseph Maguire (December 27, 2018 – August 15, 2019) Russell Travers (acting) (August 16, 2019 – March 18, 2020) Lora Shiao (acting) (April 3, 2020 – August 10, 2020) Christopher C. Miller (August 10, 2020 – November 9, 2020) Steve Vanech (acting) (November 10, 2020 – June 29, 2021) Christine Abizaid (June 29, 2021 - Present) Deputy Directors Arthur M. Cummings (2004–05) Kevin R. Brock (2005–07) Michael E. Leiter (2007–08) Geoff O'Connell (2008–2011) Andrew Liepman (2011–2012) Nicholas J. Rasmussen (2012–2014) L. Joseph Camilleri (2016–2017) John J. Mulligan Lora Shiao (April 2020 – November 2020) Steve Vanech (acting) (November 2020 – present) See also Director of Central Intelligence Directive Counterterrorism Center Information Sharing Environment Disposition Matrix Joint Terrorism Analysis Centre – a similar body in the UK References External links NCTC Website Office of the Director of National Intelligence Website NCTC News Story on Appointment of Michael Leiter and retirement of Kevin Brock News about new NCTC on FBI website BBC News article with internal photograph A Comparison of the 2008 and 2012 NCTC Guidelines, WSJ Counterterrorist organizations United States intelligence agencies 2003 establishments in the United States Buildings and structures in Fairfax County, Virginia Counterterrorism in the United States Government agencies established in 2003