Maintenance men assigned to an aviation brigade of the air force under the PLA Western Theater Command go through pre-flight procedures on a J-11 fighter jet prior to the flight training exercise in the hinterland of the Kunlun Mountains in early September, 2018. (Photo/eng.chinamil.com.cn)
A KJ-500 airborne early warning (AEW) aircraft attached to an aviation brigade of the air force under the PLA Western Theater Command takes off for a combat sortie during the flight training exercise in the hinterland of the Kunlun Mountains in early September, 2018. (Photo/eng.chinamil.com.cn)
A J-11 fighter jet attached to an aviation brigade of the air force under the PLA Western Theater Command deploys its drogue parachute to slow itself after landing at a military airfield during the flight training exercise in the hinterland of the Kunlun Mountains in early September, 2018. (Photo/eng.chinamil.com.cn)
A pilot assigned to an aviation brigade of the air force under the PLA Western Theater Command pilots his J-11 fighter jet to conduct fire strike during the flight training exercise in the hinterland of the Kunlun Mountains in early September, 2018. (Photo/eng.chinamil.com.cn)
Weapons load crew airmen assigned to an aviation brigade of the air force under the PLA Western Theater Command transfer missiles of J-11 fighter jets prior to the flight training exercise in the hinterland of the Kunlun Mountains in early September, 2018. (Photo/eng.chinamil.com.cn)
Maintenance men assigned to an aviation brigade of the air force under the PLA Western Theater Command conduct a foreign object debris walk at a military airfield prior to the flight training exercise in the hinterland of the Kunlun Mountains in early September, 2018. (Photo/eng.chinamil.com.cn)