ABM Industries

OneSource Management is one of the leading providers of outsourced facilities services in the United States. It serves the aviation, commercial, real estate, construction, institutional, retail and manufacturing industries. The company employs more than 30,000 people and operates over 90 offices. It offers a range of commercial cleaning, landscaping and building maintenance services to the government and industrial facilities. OneSource Management maintains an annual revenue of nearly $800 million and serves approximately 10,000 customers. The company also undertakes metal, marble, wood, door and ground maintenance. It additionally provides several aviation support services, such as mechanical maintenance, aircraft ground handling, and mail and cargo handling. Headquartered in Atlanta, OneSource Management maintains a location in San Antonio.