Choppers conduct high-intensity flight training

4月20日，第81集团军某旅组织多机型直升机展开高强度、跨昼夜飞行训练。机务人员检修战机，准备夜间训练。(英文中国军网/栾铖 摄影报道) Ground crew members assigned to an aviation brigade under the PLA 81st Group Army inspect and maintain a helicopter, preparing it for the round-the-clock flight training on April 20, 2022. (eng.chinamil.com.cn/Photo by Luan Cheng)