U.S. Air Force Staff Sgt. Christopher Leonard, 633rd Medical Operations Squadron paramedic, simulates ambulatory care of a patient at Langley Air Force Base, Va., April 29, 2014. Beginning May 1, the 633rd MDOS paramedics will transfer operations to the Langley AFB fire department, improving response times and the operational effectiveness of emergency response teams. (U.S. Air Force photo by Airman 1st Class Kimberly Nagle/Released)