Recently, an air defense brigade under the Nanjing Military Area Command (MAC) of the Chinese People's Liberation Army (PLA) acting as a "Red Army" troop unit conducted a confrontation drill in an area with a "Blue Army" troop unit composed of an air force unit, a base under the General Armaments Department (GAD) of the PLA and an electronic countermeasures (ECM) brigade of a combined corps of the Army of the PLA. (Chinamil.com.cn/Sun Yang)