Photos

Air Force chief scientists See Alaska as "central"
A researcher from the Permafrost Research Tunnel Facility in Fox, Alaska, demonstrates changing permafrost features to members of the U.S. Air Force Chief Scientist’s Group during a visit July 22, 2019. The Air Force scientists visited Alaska to tour facilities relevant to the Arctic, missile defense and operational missions of the Joint Forces. (U.S. Air Force photo by Lt. Col. Peter Shinn)