National OPSEC Program Membership:

National Security Agency (www.nsa.gov)
Central Intelligence Agency (www.cia.gov)
Department of Defense (www.defenselink.mil)
General Services Administration (www.gsa.gov)
Department of Energy (www.doe.gov)
Federal Bureau of Investigation (www.fbi.gov)
Department of Homeland Security (www.dhs.gov)

IOSS Partners:

National Nuclear Security Administration, Nevada Site Operations
National Counterintelligence Executive (www.ncix.gov)
OPSEC Professionals Society ( http://www.opsecsociety.org )
National Classification Management Society (www.classmgmt.com)