Sherry Perkins is strapped to a litter while she plays the role of a patient onboard a C-17 Globemaster III aircraft during a 315th Aeromedical Evacuation Squadron training flight to Keesler Air Force Base, Miss. June 21, 2012. The flight introduced Perkins, and other Guard and Reserve employers, to the U.S. Air Force Reserve and allowed them to see what their employees do when they report for training and participate in real-world missions. Perkins is a clinical manager at one of the Roper St. Francis Healthcare emergency departments in Charleston, S.C. (U.S. Air Force Photo/Staff Sgt. Shane Ellis)