Founded in 1949, Whelan Security is one of the largest privately held contract security companies in the United States. The company provides uniformed and special event security services, as well as patrol and alarm response services. It also offers emergency response and labor dispute services. Whelan Security provides security services for commercial real estate buildings, educational institutions, retail shopping centers, residential communities, and banking and financial institutions. The company additionally serves manufacturing, industrial, distribution and health care facilities. It has partnerships with TransNational Security, Whelan Security, iMac, NC4 and Off Duty Services. Whelan Security maintains a location in Little Rock, Ariz.