Operational since 1963, Vinson Guard Service is one of the largest security organizations in the United States. The firm offers a range of services, such as undercover operations, pre-employment, employee screening, substance abuse screening and executive protection. The firm supplies investigative services in the states of Louisiana, Alabama, Georgia, Tennessee and Texas. Vinson Guard Service has partnerships with Vinson Uniforms, a full-service public safety and security uniform/equipment provider. The firm has associations with Vinson Guard Service, Louisiana Private Investigators Association, Public Record Retrieval Network and Tennessee Private Investigator Association.