U.S. Security Associates Inc. (USA) is first uniformed security company to be certified ISO 9001:2008 in 2004. U.S. Security Associates engineers high-value security solutions for over 3,400 clients throughout the country. As one of the nation's largest uniformed guard service provider. U.S. Security Associates engineers high-value security solutions for over 3,400 clients throughout the country. As one of the nation's largest uniformed guard service providers, we attribute our success to continually investing in security program design and support, offering above-average security officer wages, providing superior background screening, training and supervision, and the most responsive customer service in the industry. USA was established as Advance Security Engineering in 1955 in Atlanta