Airmen give their thumbs up to encourage the pilot sitting inside a J-11 fighter jet prior to the Golden Helmet - 2017 competition of the PLA Air Force. (Photo/eng.chinamil.com.cn)
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Airmen give their thumbs up to encourage the pilot sitting inside a J-11 fighter jet prior to the Golden Helmet - 2017 competition of the PLA Air Force. (Photo/eng.chinamil.com.cn)