Readiness

A Marine attached to Deployment Processing Command Reserve Support Unit-East, Force Headquarters Group, breaks the seal of his gas mask during gas chamber training at Marine Corps Base Camp Lejeune, North Carolina, Oct. 22, 2019. The DPC/RSU-East staff conducted gas chamber training, an annual training event, requiring Marines to be exposed to chlorobenzalmalononitrile tablets, also known as CS gas, in order to familiarize themselves with their gas mask. (U.S. Marine Corps photo by Sgt. Andy O. Martinez)