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..
National Counterterrorism Center — nctc.gov