security system

security agreement (information security, NATO)

fire extinguishing system sprinkler system and fire alarm system

all-embracing system of international security

collective security system

comprehensive system of international security

international security system

mobile security system

regional security system

Ship Security Alert System (SSAS)

system of collective defence / security

security aspects (working with the system)

merchant ship communication system (mercomm system)

multiple launch rocket system (MLRS); multiple rocket launcher system

Air Force weapons system / AF weapon system

attitude-and-heading reference system / attitude and heading reference system (AHRS)

selective calling system, SELCAL system

Unmanned Aerial System / Uncrewed Aircraf System (UAS)

system of system common operating environment

all-around security

area security

Area Security Coordination Center (ASCC)

army intelligence and security

Assistant Secretary General for Political Affairs and Security Policy

Assistant to the President for National Security Affairs

battlefield security

border (security) forces /troops

border security

Central Security Service (CSS)

centres for security studies

civilian security experts

collective security

collective security actors