Air Transport Services Group, Inc. is a holding company. The Company is a provider of aircraft leasing and air cargo transportation and related services. The Company’s segments include Cargo Aircraft Management, Inc. (CAM) and ACMI Services. The CAM segment includes the leasing of aircraft and aircraft engines. Its freighter fleet is composed primarily of Boeing 767 aircraft. The ACMI Services segment includes the cargo and passenger aircraft flight operations of its three airline subsidiaries: ABX Air, Inc., Air Transport International, Inc., and Omni Air International, LLC. Its airlines operate under contracts to provide a combination of aircraft, flight crews, aircraft maintenance, aircraft hull and liability insurance and aviation fuel. Its other business operations, which include providing support services to the transportation industry, ranging from flight and ground operations to aircraft maintenance, repair and overhaul services.