Vinson Guard Service is American owned, family operated. It is one of the largest privately owned security organizations in the United States. Vinson operates more than 20 fully staffed offices and supplies investigative services in the states of Louisiana, Alabama, Georgia, Tennessee and Texas. The company s other services include undercover operations, pre-employment and employee screening, substance abuse screening, executive protection and many others. Vinson s partner company, Vinson Uniforms, is a full service public safety and security uniform and equipment provider. Established in 1963, Vinson Guard Service has headquarters in Birmingham, Ala.