Soldiers fire a truck-mounted rocket launcher to strike the simulated enemy during the "Firepower-2015 Qingtongxia D" trans-Military Area Command (MAC) live-fire military exercises. Troops from a regiment under the 21st Group Army of the PLA Lanzhou MAC and an artillery brigade under the 16th Group Army of the PLA Shenyang MAC participated in the exercises in a training ground of the Lanzhou MAC on the afternoon of Aug. 16, 2015. (Photo/ China Military Online)