Airport Terminal Services is the largest privately held ground handling company in North America. The company specializes in ground support services, including ramp, passenger, cargo, refueling and cabin services for airlines throughout the United States and Canada. ATS supplies services to domestic and international airlines operating both wide- and narrow-body aircraft. Its customers include Continental Airlines for whom the company provides services in six cities, regional carriers and corporations operating business aircraft, as well as major airport authorities to which the company provides facility management services. ATS specializes in ground support services, including ramp, passenger, cargo, airfreight, refueling, cabin services and facility management. Airport Terminal Services was formed in 1975. Its home office is in St. Ann, Mo., a suburb of St. Louis.