Air Transport Services Group, Inc. (ATSG) is a holding company. Through its subsidiaries, the Company provides aircraft leasing, airline operations, aircraft maintenance and other support services to the air cargo transportation and package delivery industries. The Company offers a range of services to delivery companies, freight forwarders, airlines and Government customers. ATSG's leasing subsidiary, Cargo Aircraft Management, Inc., which leases cargo aircraft to ATSG's airlines and to external customers. Airborne Global Solutions, Inc. that assists its businesses in marketing plans and provides sales leads to its subsidiaries by identifying customers' business and operational requirements. Its other business operations, including aircraft maintenance and modification services, aircraft part sales, equipment leasing and maintenance and mail handling for the United States Postal Service. Its principal subsidiaries include ABX Air, Inc. and Air Transport International, Inc.