Corporal Bradley Wickham (front left), a chemical, biological, radiological and nuclear defense specialist with Headquarters Regiment, 2nd Marine Logistics Group, asks Marines with 2nd MLG review questions during a CBRN reconnaissance course aboard Camp Lejeune, N.C., Feb. 25, 2015. Marines from various units within 2nd MLG took part in the training to provide their units the additional resource CBRN detection-trained Marines to use in case of disaster or attack.