Smoke Screen Marine Corps Maj. Jim Wang participates in a simulated chemical, biological, radiological and nuclear exercise during a competition at Joint Base Elmendorf-Richardson, Alaska, July 23, 2023. SHARE: Download: Full Size (0.29 MB) Tags: training, Marine Corps Credit: Marine Corps Cpl. Mitchell Johnson VIRIN: 230723-M-FO238-2300C.JPG Photo Gallery