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
Naval Air Station Keflavik Corporation or Kadeco which was given the task of converting the base into civilian use. Since May 2008 Keflavik has periodically hosted NATO fighter, AWACS and support aircraft participating in Icelandic Air Policing deployments. In January 2010, Verne Holdings announced that it had received equity funding from the Wellcome Trust to build a data center at Keflavik. The data center will take advantage of the available geothermal power and free cooling to minimize its carbon footprint. In September 2015, news media reported U.S. government officials expressed a desire to reopen aspects of the NATO base of Keflavik Naval Air Station,