U.S. Air Force Senior Airman Keith Libby, right, 379th Expeditionary Medical Group combat medical technician, reads the blood pressure of Staff Sgt. Danielle Diaz, 379th EMDG combat medical technician, during a training exercise Nov. 14, 2012. All Air Force combat medics are certified to be emergency medical technicians. The medics are required to know all operations inside an ambulance and how to properly take care of the patient while in the ambulance as EMTs. (U.S. Air Force photo/Senior Airman Joel Mease/Released)