11月28日，西藏军区某陆航旅在海拔4000米的高原组织开展跨昼夜编队飞行，提高部队实战能力。(中国军网英文版/王添昊摄影报道)
A cluster of Mi-171 transport helicopters attached to an army aviation brigade under the PLA Xizang Military Command lift off from their parking aprons for a round-the-clock high-altitude flight training exercise in plateau area of southwest China's Xizang Autonomous Region on November 28, 2019. (eng.chinamil.com.cn/Photo by Wang Tianhao)
