An H-6K bomber is seen during a patrol over the South China Sea. Chinese Air Force aircraft, including H-6K bombers and Su-30 fighters, have completed a patrol of airspace above the Nansha and Huangyan islands in the South China Sea, said a spokesperson Saturday. The flight is part of actual combat training to improve the Air Force's response to security threats, said Senior Colonel Shen Jinke of the People's Liberation Army (PLA) Air Force. (Xinhua/Zhao Shijie)