U.S. Air Force Tech. Sgt. Jeffery Austin monitors his radar in an effort to track and identify air traffic in Alaska and Canada during Alaska Shield/Northern Edge Exercise '05 at Elemendorf Air Force Base, Alaska, Aug. 15, 2005. Austin is an air surveillance techincian assigned to the 176th Air Control Squadron at Elemendorf. U.S. Air Force photo by Airman 1st Class Anthony Nelson Jr.