Main » Department of Security Systems Department of Security Systems Mission It is the mission of the Department of Security Systems to enhance and maintain security technology in order to strengthen the overall safety of students, staff, visitors and facilities of DeKalb County Schools. To Contact us please call 678-676-2250. Home CCTV Division Intrusion Alarm Division Card Access Division Walkie-Talkies Staff Jim Hanson Director, Department of Security Systems Fred Nathan CCTV Technician Sheree Walton Assistant to the Director of Security Systems Vicki Durbin Security Specialist Delie Liburd Alarm Intrusion Technician Casey McGlamery Inspection & Training Officer Chuck Hutcheson Security Systems Manager Stan Holwell Security Systems Manager Related Websites NOAA Dept. of Homeland Security FEMA GEMA