The Special Surveillance Group (SSG) is a unit of non-Special Agents within the Federal Bureau of Investigation specializing in clandestine vehicular and foot surveillance of foreign nationals and U.S. citizens known or suspected of engaging in espionage or terrorism. SSG members are titled "Investigative Specialists."
These Investigative Specialists attend specialized training at the FBI Academy in Quantico, Virginia. They carry FBI credentials and badges, and conduct much of the same investigative work the Special Agents carry out. However, as they are not Special Agents themselves, SSG personnel do not carry firearms and do not make arrests.