Prior to a mass casualty exercise on Camp Liberty, Ripley, Tenn., native, Capt. Marolyn Pearson (right), division senior physician assistant, Division Special Troops Battalion, 1st Cavalry Division, assists Windsor, Calif., native, Pvt. Micah Phillips, a computer detection systems repair specialist for Company C, DSTB, with donning a rubber prosthetic which simulates a laceration to the back. Phillips acted as a mock casualty for the exercise.