LANGLEY AIR FORCE BASE, Va. -- Paul Ruppert, 633d Medical Operations Squadron paramedic, simulates injecting cardiac drugs into 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)