OKINAWA, Japan (July 29, 2020) U.S. Marines with Chemical, Biological, Radiological and Nuclear (CBRN) Platoon, Headquarters Battalion, 3d Marine Division, prepare to ascend with a simulated casualty during a rope rescue technicians course at Marine Corps Air Station Futenma, Okinawa, Japan, July 29, 2020. The CBRN Platoon conducted rescue training at a cave as part of an ongoing ropes course, in order to maintain proficiency in specialized rescue techniques. To mitigate the risks associated with COVID-19, the Marines utilized masks and maintained social distancing during the training evolution. (U.S. Marine Corps photo by Lance Cpl. Juan Carpanzano)