I don't think this has been posted yet,.........more information
Some, but not all, information from TIDE is transferred to the FBI-maintained Terrorist Screening Data Base (TSDB), from which consular, border and airline watch lists are drawn. The Transportation Security Administration has a "no-fly" list of about 4,000 people who are prohibited from boarding any domestic or U.S.-bound aircraft. A separate list of about 14,000 "selectees" require additional scrutiny but are not banned from flying.
Abdulmutallab's name never made it past the TIDE database. "A TIDE record on Umar Farouk Abdulmutallab was created in November 2009," one administration official said, but "there was insufficient information available on the subject at that time to include him in the TSDB or its 'no fly' or 'selectee' lists."