Civilian role players get information from U.S. Soldiers with the 501st Special Troops Battalion, 501st Sustainment Brigade before boarding a bus during training on noncombat evacuation operations during the Chairman of the Joint Chiefs of Staff's exercise Ulchi Freedom Guardian 2011 at Camp Walker in South Korea Aug. 18, 2011. Ulchi-Freedom Guardian is an annual joint/combined command post exercise designed to improve the ability of South Korea to defend itself.