National security/Civil defence/Immigration managerial officer leads a department or division of police officers (including auxiliary police officers), fire-fighting and rescue officers or customs/immigration officers. He/she provides overall direction and management for his/her department or division. He/she manages manpower resources, maintains the professionalism and discipline of his/her department or unit. He/she assesses and mitigates security risks, prepares operation orders, and oversees responses to incidents and emergencies.