A Soldier, right, from 178th Engineer Company, 1st Maneuver Enhancement Brigade, gives instructions to Joe Bartlett, a Department of Defense civilian with Safety Solutions, during a field training exercise at the Combined Arms Collective Training Facility on Fort Polk, La., Dec. 6, 2011. During the exercise, held December 5-9, Soldiers were exposed to a simulated chemical environment where they had to conduct life-saving and life-sustaining operations. Soldiers of 178th Engineer Company and other elements of 1st Maneuver Enhancement Brigade, are assigned in support of the Joint Task Force Civil Support, Defense Chemical Biological Radiological and Nuclear Response Force (DCRF). The DCRF is a total force of about 5,400 personnel consisting of primarily Army with augmentation from other services and civilians from active-duty, National Guard and reserve units, who deploy as the Department of Defense's initial response force for a Chemical, Biological, Radiological, Nuclear and Enhanced Conventional Weapons (CBRNE) incident.