KEFLAVIK, Iceland -- Staff Sgt. Dana Fernkas, 756th Air Refueling Squadron, refuels an F-16 from the 115th Fighter Wing, Wisconsin Air National Guard, during the 2011 Northern Viking exercise here Jun

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KEFLAVIK, Iceland -- Staff Sgt. Dana Fernkas, 756th Air Refueling Squadron, refuels an F-16 from the 115th Fighter Wing, Wisconsin Air National Guard, during the 2011 Northern Viking exercise here June 7. Northern Viking tests the capabilities of Iceland and the country's NATO allies, as well as increase the readiness of the forces involved and their interoperability. The Reserve 459th Air Refueling Wing, Joint Base Andrews, Md., participated in this year's exercise along with other total force Air Force contigents. (U.S. Air Force photo released/Tech. Sgt. Steve Lewis)

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