Capt. Dave Gosselin, of the Royal Canadian air force, tracks aircraft in Alaska air space ensuring air sovereignty in the Alaskan NORAD Region Regional Air Operations Center Dec. 19, 2013, at Joint Base Elmendorf-Richardson, Alaska. United States and Canadian service members use 15 radar stations to monitor Santa as he traverses the airspace around the northern latitudes of North America, a mission ANR has successfully accomplished for 50 years. (U.S. Air Force photo/Tech. Sgt. John Gordinier)