Army and Air Guard personnel work together to set up medical tents and receive simulated patients from a chemical decontamination line during a disaster-response exercise held Nov. 28, 2011, at the Wendell H. Ford Regional Training Center in Greenville, Ky. The troops are part of a CERFP - short for Chemical, biological, radiological, nuclear or high-yield explosive Enhanced Response Force Package - that provides immediate response capability to the governor of a state affected by a terrorist or enemy attack. (Courtesy photo)