+ Assessing the Threat
The comments of counterterrorism authorities, and others, drawn from FRONTLINE's extended interviews. Could there be another sleeper cell within the U.S.? And what kind -- Al Qaeda operatives, or homegrown terrorists motivated by Al Qaeda ideology?
+ The Government's 400 Terror-Related Cases
A recent study by New York University's Center on Law and Security examines closely the Justice Department's more than 400 terror-related prosecutions and raises questions about just how substantial these cases are. Here's an interview with the Center's executive director, Karen Greenberg.
+ Kevin James and the JIS Conspiracy
The only "operational" homegrown terror plot since 9/11 led investigators inside the California prison system. Now, the group's alleged ringleader makes his first public response to the charges.
Reports from The New York Times
+ Adding Up the Ounces of Prevention
On the fifth anniversary of 9/11, the Times compiled this overview of the U.S. government's top terror-related investigations -- what they involved and their outcome or status to date.
Written by current and former students at the Graduate School of Journalism at the University of California, Berkeley and a reporting intern at the Center for Investigative Reporting, who assisted in the research and reporting for "The Enemy Within."
+ Policing the Front Lines
The new efforts to get data from the federal government's terrorist watch list to local police on the street.
+ The Man Turned Away
Raed al-Banna was turned away by Customs and Border Patrol authorities on a visa violation. A year and a half later he was identified as the suicide bomber who killed 166 people and wounded 146 in Hilla, Iraq.
+ Informants and Counterterrorism
The cornerstone of the Lodi case was a convenience store clerk turned FBI informant. How does the FBI use informants, and when is the line crossed?
+ The FBI's New Paradigm
Using newly expanded capabilities, the bureau is now working to disrupt and prevent a terror attack within the United States. Is it up to the task?
+ Engaging the Muslim Community
The Lodi, Calif. case strained relations with the local Muslim community. What are the challenges the government faces in gaining the trust of Muslim Americans while fighting terror?