Security Guard Services in Los Angeles County American Guard is a Professional Security Guard Services company in the State of California. We offer Security Guard Services to all the major cities in California including: Los Angeles, Anaheim, Riverside, San Diego, Fresno, Beverly Hills, Sacramento, Orange County, Long Beach and more. We take great pride in our work throughout California and the surrounding regions. Our security personnel are operating for you at all times. Requiring minimal direction, our staff efficiently and effectively provide a scalable full complement of security services tailored to meet our clients’ individual needs. American Guard Security provides site specific customized security plans and procedures to fit our clients requirements and needs.