A massive U.S. government database of known or suspected terrorists contains the names of about 25,000 Americans or legal residents, which represents about 2 percent of the total number of people in the vast intelligence files.
According to the National Counterterrorism Center, there were 1.1 million people, many with multiple spelling variations, in the classified database as of December 2013. The government draws from the database when it places individuals on its no-fly list. There were 47,000 people on the no-fly list, 800 of whom were Americans.
The number of people in the database more than doubled after a terrorist failed to blow up a Detroit-bound airliner on 2009, according to secret documents leaked to the online magazine The Intercept and published Tuesday.
Since late 2010, “analysts have created more than 430,000 terrorism-related person records and deleted 50,000 subjects whose nexus to terrorism was refuted or did not meet current watchlisting criteria,” the documents show.
The Associated Press also reported similar figures Tuesday, citing newly released information provided by the National Counterterrorism Center. The database, called the Terrorist Identities Datamart Environment, or TIDE, was created after the Sept. 11, 2001 terror attacks.
The counterterrorism center said in a statement that “TIDE — in supporting the watchlisting system — provides a critical layer in our counterterrorism defenses.”
The documents obtained by The Intercept also indicated that the government, with the assistance of the CIA, is in the midst of a major effort to obtain biometric data on people in the database. The records say analysts have added 730,000 biometric files to the database; some of those files include fingerprints, iris scans and facial photographs.
As of last year, the database contained 860,000 biometric files related to 144,000 people.
In 2013, The Intercept said, the government collected biometric information from U.S. driver’s licenses. The Intercept said 2,400 images were provided and placed in the database.
The government has also embraced non-traditional biometric datafields for use in TIDE, including handwriting, signatures, scars, tattoos and DNA strands.
The documents also outline the government’s exhaustive efforts to improve the information in the database, relying partly on the CIA’s “clandestinely acquired foreign government information” to enhance “select populations.”
To do this, the CIA used a secret program called “Hydra.” For example, the CIA took 555 Pakistanis listed in TIDE and vetted the names against their Pakistani passports. The CIA was able to supplement the database with biometric and biographic information.
The documents didn’t provide any additional details about the CIA program.
Managing the database is onerous, with analysts handling an average of 250 nominations a day and 200 encounter reports along with visa applications.
In 2013, the CIA accounted for the greatest number of nominations at about 45 percent. The FBI nominated 5 percent, the lowest number of nominations.
The Intercept said the top five U.S. cities with “known or suspected terrorists” are New York; Dearborn, Mich.; Houston; San Diego; and Chicago.
The Intercept reported that the Untied States put 3,200 “known or suspected terrorists” in the database because of connections with the Syria conflict, including 715 Europeans and Canadians and 41 Americans.
U.S. officials have said about 100 Americans have traveled to Syria. The FBI is monitoring about a dozen of them who have returned to the United States, officials said.