KINSHASA, Democratic Republic of the Congo -- U.S. Air Force Lt. Col. Rick Vatt, the chief of aerospace medicine of the North Carolina Air National Guard's 145th Airlift Wing, teaches through an interpreter, to Democratic Republic of the Congo military members during MEDLITE 11, April 26, 2011. MEDLITE 11 is a joint medical exercise focused on aeromedical evacuation, to improve the readiness of U.S. Air Force and DRC personnel. (U.S. Air Force photo by Tech. Sgt. Todd Wivell)