A Russian SU-27 Flanker, flying from Petropavlovsk-Kamchatski, intercepts Fencing 1220, a suspected hijacked aircraft during Exercise Vigilant Eagle Aug. 7. Fighters and Airborne Warning and Control aircraft from the United States and Russia participated in Vigilant Eagle 2011. The exercise marks the second year of cooperation between the Russian Federation and NORAD to counter possible threats of air terrorism crossing international boundaries. (U.S. Air Force photo by Capt. Uriah Orland)