So Marines Can Survive Chemical Biological Radiological and Nuclear Marines are prepared to operate and respond to hazards in contaminated environments. (1st Marine Logistics Group video by Lance Cpl. Miah Nielsen) | U.S. Marine Corps

In week 2 of Basic Training, U.S. Army Trainees are exposed to the CBRN chamber. This event exposes Trainees to chemical, biological, radiological, and nuclear irritants that challenge them to remain calm during stressful situations and trust their equipment by efficiently clearing and applying their gas masks. Do you remember your first time going through the gas chamber? | U.S. Army Center for Initial Military Training