Air Transport Services Group, Inc. engages in the provision of airline operations, aircraft leases, aircraft maintenance and other support services primarily to the cargo transportation and package delivery industries. It operates through two segments: ACMI Services and CAM . The ACMI Services segment includes the cargo transportation operations of its three airlines. The CAM segment consists of the company's aircraft leasing operations and its segment earnings includes an allocation of interest expense based on aircraft values. Its other business operations, which primarily provide support services to the transportation industry include aircraft maintenance; aircraft part sales, ground equipment leasing and mail handling services. The company was founded on April 16, 1980 and is headquartered in Wilmington, OH.