A F-16 from the 140th Fighter Wing, Buckley Air National Guard Base, CO, guides a C-21 from the 458th Airlift Squadron, Scott Air Force base, Ill Dec. 13 during Felix 12-4, a Western Air Defense Sector exercise. The short notice exercise involved two scenarios, one where the two C-21 pilots were unconscious and another where the plane had been hijacked with no radio contact. In both scenarios the F-16 intercepted the C-21 over Colorado to guide them home. (U.S. Air Force photo/ Staff Sgt. Stephenie Wade)