KEFLAVIK, Iceland -- Maj. Scott Clark (right), 756th Air Refueling Squadron pilot and exercise detachment commander, coordinates ground communications with 1st Lt. Kim Bruvik, Royal Norwegian Air Force flight controller, during the 2011 Northern Viking exercise here June 9. 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 active-duty and Air National Guard units. (U.S. Air Force photo released/Tech. Sgt. Steve Lewis)