A Chinese member operates a descent control device to evacuate the simulated wounded person with ropes from a high-rise building during the humanitarian assistance disaster relief field training drill as a part of the Cobra Gold-2020 joint military exercise at the national disaster relief training center in Chachoengsao Province, Thailand from February 25 to March 6, 2020. Over 200 troops from seven countries including China, Thailand and the US participated in the exercise. (eng.chinamil.com.cn/Photo by Yin Bo)
