High Quality Content by WIKIPEDIA articles! A Joint Terrorism Task Force (JTTF) is a partnership between various U.S. law enforcement agencies that is charged with taking action against terrorism, which includes the investigation of crimes such as wire fraud and identity theft. The agencies that a JTTF comprises generally include the Federal Bureau of Investigation, other federal agencies (notably Department of Homeland Security components such as U.S. Coast Guard Investigative Service, U.S. Immigration and Customs Enforcement, U.S. Customs and Border Protection, the Transportation Security Administration, and the U.S. Secret Service as well as the Department of State`s Diplomatic Security Service), state and local law enforcement, and specialized agencies, such as railroad police.