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Security guard and patrols in Ontario, CA

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Guard Systems, also known as GSI, is a one of the largest, privately held providers of security services in Southern California. Founded in 1956, it manages a staff of more than 700 security officers. The company serves nearly 195 customers. Guard Systems offers planning, field supervision and training services. Its clients include malls, government agencies, and health care and educational facilities. The company s dispatch center operates 24 hours a day, seven days a week. It is a member of the Overseas Security Advisory Council, Department of Homeland Security, California Association of Licensed Security Agencies, Guards & Associates, and ASIS International. Guard Systems also offers online security tips.

Third Shift Security

We are committed to delivering world-class protection services with a personal touch. Our company stands at the intersection of advanced security solutions and exceptional client services--including on-site personnel, mobile patrols, surveillance systems, and risk assessments-tailored to meet the unique needs of each client.

NexGen Security Company

We provide excellent security for California and we are proud to serve our community

Above All Security

We have over 20 yrs of Experience and are always ready to respond to the call

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