‘No Fly’ and Terrorist Lists Explained

The Terrorist Identities Datamart Environment (TIDE) — 500,000 on list
International intelligence community’s central repository of information on known and suspected international terrorists.

Terrorist Screening Data Base (TSDB) — 400,000 on list
The main identities database of the United States government on international terrorism.

TSDB SELECTEE LIST — 14,000 on list
Mandatory secondary screening required for people on the selectee list.

‘NO FLY’ LIST aka Terrorist Watch List (secret list) — 4,000 on list
Not allowed to fly on commercial airliners..

Wikipedia: No Fly List | National Counterterrorism Center -NCTC

SOURCE: FOXNEWS ‘Bureaucratic Plumbing’ Scrutinized in Wake of Suspect’s Watch List Status

National Counterterrorism Center — nctc.gov