Naval Air Station Keflavik of the airport was assumed by Military Air Transport Service (MATS). MATS re-established a military air terminal and refueling point for trans-Atlantic air service between the United States and Europe at Keflavik. MATS (later MAC and Air Mobility Command) units remained at the airport until the withdrawal of United States military units from Iceland in 2006. During 1947–51, while the base was operated by a US civilian contractor company most of the World War II temporary structures were left empty and became badly deteriorated. The airfield complex, one of the largest in the world during the war, also required upgrading
Chinggis Khaan International Airport Chinggis Khaan International Airport Chinggis Khaan International Airport (, "Çingis hán olon ulsîn niseh búdal", ) is the international airport serving Ulaanbaatar, Mongolia, situated southwest of the capital. It is the largest international air facility in the country. The airport was first established as "Buyant-Ukhaa airport" (, "Buyant-Uhá niseh onğocnî töw búdal") on 19 February 1957. In 1958, international flights began with flights to Irkutsk and Beijing using Ilyushin Il-14 aircraft. Regular flights from the airport started in 1961. The terminal was upgraded to make it suitable for international traffic in 1986. Between 1994 and 1997 a further major upgrade