The CFNCIU is responsible to provide Security Intelligence (SI) and Counter Intelligence (CI) services in support of the CF and the DND during peace, crisis and war. The mission of the CFNCIU consists in identifying, investigating and countering threats to the security of the CF and the DND from foreign intelligence services, or from individuals/groups engaged of espionage, sabotage, subversion, terrorism, extremism or criminal activities. The CFNCIU is a national level, specialist unit responsible for the provision of counter-intelligence (specifically counter-HUMINT) services to the CF and the DND. In addition, the CFNCIU is responsible for the Defensive Security Briefing and Debriefing Program. This program is designed to provide knowledge and assistance to assist CF and DND members in protecting themselves and the Department from potential threats involved in foreign travel, either for Duty or Non-Duty travel, or who may have or have contact with foreign nationals.