SOUTHWEST ASIA - U.S. Air Force Master Sgt. Roberto Gutierrez, an independent duty medical technician from the 386th Expeditionary Operations Support Squadron, listens to a patient's lungs May 1, 2010 at an air base here. There are fewer than 500 IDMTs in the Air Force and they are often assigned to flying units or organizations in isolated locations to tend to the units' medical needs. (U.S. Air Force photo/Capt. Joe Campbell)