defense and security sector

security sector / structures

security sector reform (SSR)

security sector reform

air defense sector

maritime defense sector

worm and sector steering device

Council of National Security and Defense of Ukraine (CNSDU)

defense and Security Directorate (NATO)

European Security and Defense Identity (ESDI)

European Security and Defense Policy (ESDP)

national security and defense

Royal United Services Institute for defense and Security Studies (RUSI)

observation and fields of fire, avenues of approach, key and decisive terrain,obstacles, and cover and concealment (OAKOC)

security agreement (information security, NATO)

aerospace sector

automatic sector scanning

critical sector

primary sector of fire

secondary fire sector

sector

sector of defensive responsibility

sector of support

technologically advanced sector

secondary sector of fire

firing sector

decisive sector

cradle toothed sector

windshield sector arm

emergency sector of fire

course sector

coverage sector

rear area surveillance sector