OPERATION NOBLE EAGLE --Two Air-Defense Fighter F-16A Fighting Falcons from the North Dakota Air National Guard’s 178th Fighter Squadron fly in formation Nov. 17, 2001 during a combat air patrol mission over Washington in support of Operation Noble Eagle. North American Aerospace Defense Command had more than 100 ANG and Air Force Reserve fighters from 26 locations providing homeland defense, with 100 additional fighters backing them up. Additionally, more than 20 ANG and AFRES tankers are airborne every day to keep fighters refueled. (U.S. Air Force photo by Staff Sgt. Greg L. Davis)