Spc. Timothy Gallup (center), 44th Chemical Company, 2nd Chemical Battalion, 48th Chemical Brigade, rinses off Michael Ratterman, one of the role players, during a mass casualty decontamination exercise, June 12, 2013, at the Skylark Airfield in Killeen Texas, while Pvt. Stephanie Emerick (right), 566th Area Support Medical Company, 61st Multifunctional Medical Battalion, 1st Medical Brigade, stands by with a sponge to wash him. The units were conducting decontamination training under the watchful eyes of the Civil Support Training Activity-Central from U.S. Army North (Fifth Army), in preparation for the 44th Chem. Co. training proficiency evaluation, which will allow the unit to remain on the Defense Chemical, Biological, Radiological and Nuclear Response Force mission for another year.