An F-15E Strike Eagle, assigned to the 494th Fighter Squadron, flies above Bodø Main Air Station, Norway, Sept. 23, 2013. Approximately 30 aircraft deployed from Royal Air Force Bases Lakenheath and Mildenhall, to multiple locations in Norway, in support of the Arctic Challenge exercise 2013 (ACE-13). ACE-13 is a combined exercise with our NATO allies and regional partners, which promotes continued interoperability between the U.S., Norway, Sweden and Finland. (U.S. Air Force photo/Master Sgt. Lee Osberry)