A Russian SU-27 conducted a "barrel roll" Friday over the top of a U.S. Air Force RC-135 which was flying a reconnaissance mission in international airspace above the Baltic Sea, two U.S. defense officials told CNN.
원문출처 : http://edition.cnn.com/2016/04/29/politics/russians-barrel-roll-air-force-plane/index.html?eref=edition
원문출처 : http://edition.cnn.com/2016/04/29/politics/russians-barrel-roll-air-force-plane/index.html?eref=edition