Marines with 2nd Marine Logistics Group simulate decontamination line procedures during their Chemical, Biological, Radiological and Nuclear decontamination course aboard Camp Lejeune, N.C., July 16, 2015. Marines from various units within 2nd MLG participated in the event that exercised multiple aspects of defense against CBRN threats, including functions of a decontamination line, treatment for CBRN symptoms and mitigating the spread of CBRN agents. (Marine Corps Photo by Cpl. Chelsea D. Toombs/Released)