This undated photo provided by the U.S. Air Force shows a Canadian Air Force F-18 Hornet jet, left, escorting a Russian TU-95 Bear heavy bomber out of Canadian airspace, according to U.S. military. Fighter jets similar to the Canadian jet shown were scrambled to intercept two Russian bombers in the Arctic as they approached Canadian airspace on the eve of a visit from Canada's prime minister who will observe an Arctic military exercise, a spokesman for the prime minister said Wednesday, Aug. 25, 2010. Dimitri Soudas, Stephen Harper's director of communications, said two Canadian CF-18 jets shadowed a pair of Russian TU-95 Bear jets in international airspace on Tuesday.