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"The US Air Force RC-135 plane was flying a routine route in international airspace when it was intercepted by the Russian SU-27 fighter, the Pentagon said."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.aol.com/article/2016/04/29/russian-jet-fighter-did-barrel-roll-over-u-s-reconnaissance-pla/21361564/>