The air train is a transport vehicle used by the former Krimzon Guard and later the Freedom League to shuttle troops or reach faraway locations where a teleport gate is not present. Such locations are mainly around Haven City, such as the dig site or weapons factory, but also include further away places like the Metal Head nest and the Wasteland. However, they have also been used inside or near the city walls to quickly deploy troops when needed. They appeared only in Jak II and Jak 3, where one was always stationed at the Port, available for anyone who had an air train pass.