Founded in 1981 by former Dallas County, Texas Sheriff Carl Thomas, and his wife, Susan, Thomas Protective Service, Inc. has benefited from a prosperous heritage of service excellence for over thirty years. Our original foundation is still solid, held together by the cornerstone of integrity, expertise and enduring quality. As our industry has changed, we have adapted, but we've never abandoned our core beliefs. The sound principles of mutual trust, performance and accountability continue to endear us to our customers.