He said they were looking for information that related to his work in the intelligence community in Northern Ireland, including information on an Irish Republican Army informer.

WSJ: Singer Charlotte Church Alleges Trade-Off With Murdoch Papers

Mr. Pistole, an FBI veteran who took over TSA in 2010, said that by studying frequent-flier histories as well as conducting background checks, he's confident the U.S. now has the technology and the intelligence information to make less-rigorous, faster screening work.

WSJ: $100 to Fly Through the Airport

To prevent future attacks, we agreed that our law enforcement and intelligence agencies will work even closer, including sharing more information.

WHITEHOUSE: President Obama and Prime Minister Singh Press Conference

But we do know now that coordinating intelligence information and the responses of government agencies is absolutely critical as we work to maximize the safety of all Americans.

CNN: Gephardt calls for independent 9-11 probe

The FBI said Sentinel is being deployed for use by analysts and employees from intelligence and other agencies who work on terrorism cases with the FBI, to aid information sharing.

WSJ: FBI Files Go Digital, After Delays and Cost Overruns

It's going to take all of us to gather the necessary intelligence, the necessary information, to be able to find the location of terrorists, to work with governments to smoke them out of their safe houses to get them moving, and then have the courage to bring them to justice.

CNN: Chirac: France stands with U.S. vs. terrorism

Sir Norman Bettison from the Association of Chief Police Officers, who, when asked if community projects are being used as "Trojan horses" to gather information, told the programme there was "no dedicated intelligence gathering" as part of the Prevent community work.

BBC: UK to shift anti-terror strategy