LANGLEY AIR FORCE BASE, Va. -- Paul Rupert and Elvin DeLoach, 633 Medical Operations Squadron paramedics, simulate an incubation on David Ezzell Jr., 633d MDOS paramedic, during Pre-Hospital Trauma Life Support training March 29. Paramedics undergo extensive training to ensure they are qualified to perform the duties assigned to them. (U.S. Air Force photo/Airman Rebecca Montez)