"""In this undated file photo released Saturday, Aug. 6, 2016, by China's Xinhua News Agency, two Chinese SU-30 fighter jets take off from an unspecified location to fly a patrol over the South China Sea. A pair of Chinese fighter jets conducted an """"unprofessional"""" intercept of an American radiation-sniffing surveillance plane over the East China Sea, the U.S. Air Force said Friday, May 19, 2017, the latest in a series of such incidents that have raised U.S. concerns in an already tense region. (Jin Danhua/Xinhua via AP)"""
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