U.S. Air Force Airman 1st Class James Hennessey and Senior Airman David Stanley, 633rd Medical Operations Squadron cardio-pulmonary technicians, perform different madatory medical processes for deployment on Derek and Anne Percivalle during the annual Operation Hero event at Langley Air Force Base, Va., Aug. 7, 2013. Operation Hero allowed children participate in a mock-deployment line, which included simulated immunizations and medication, as well as blood pressure tests and height and weight measurements. (U.S. Air Force photo by Senior Airman Brittany Paerschke-O’Brien/Released)