Arctic Challenge pits Red against Blue
A Swedish JAS-39 Gripen returns to the "play areas" of the Arctic Challenge exercise Sept. 24, 2013, over Norway, after taking fuel from a U.S. Air Force KC-135R Stratotanker. The JAS-39, in coordination with aircraft from other nations, formed a Blue Assault Force, which had to bypass or neutralize an opposing Red Force attempting to stop them from an overall objective outlined in the day’s scenario. (U.S. Air Force photo by 1st Lt. Christopher Mesnard/Released)