When US troops or US tour groups are deployed, Global Aviation Holdings helps them reach their destinations. The company, which operates through subsidiaries World Airways (founded 1948) and North American Airlines (founded 1989), provides military (passenger and cargo) and commercial cargo air transport; it also offers charter passenger services. The company leases cargo aircraft under ACMI (an acronym for aircraft, crew, maintenance, and insurance) contracts. Global Aviation maintains a leased fleet of B757-200ER, B767-300ER, and MD11 aircraft for it passenger operations, and B747-400F and MD11F wide-body long range jets for its cargo service. Global Aviation filed for bankruptcy in late 2013.