Air Transport Services Group (ATSG) has a lease on (aircraft) life. The company leases aircraft for companies in the shipping and transport industries. ATSG's rental fleet includes Boeing (767, 757, and 727) and McDonald Douglas (DC8) aircraft. The company also provides aircraft, crew, maintenance and insurance (ACMI) services to freight forwarders and other airlines through its Air Transport International and Capital Cargo International Airlines units. Other ATSC activities include airline operations (aircraft dispatching, crew scheduling, and flight tracking), aircraft parts sales, and ground support equipment rentals. The company also operates a mail sorting facility for the US Postal Service.