Several guided missile battalions under the Air Force of the Chinese People's Liberation Army (PLAAF) made a long-distance raid to the depth of desert in northwestern part of China to conduct live-fire tactical drill in early May, so as to comprehensively improve troops' capabilities such as anti-interference, mobile operation, coordinated operation and so on in complex electromagnetic environment. The photo shows that a guided missile battalion is launching missiles. (Chinamil.com.cn/ Li Yaojie and Yang Jun)