A U.S. B-52 strategic bomber flew over Chinese manmade islands in the South China Sea recently and was contacted by Chinese ground controllers but continued its mission undeterred, the Pentagon said on Thursday.<br />"We conduct B-52 flights in international air space in that part of the world all the time," Pentagon spokesman Peter Cook told a briefing.<br />"My understanding is there was one B-52 flight, I'm not even sure the date on it, but there was an effort made by Chinese ground controllers to reach out to that aircraft and that aircraft continued its mission.
