Jan Schuitema, wife of Dr. Jerry Umanos, pauses as she talks about her husband's work in Afghanistan during an exclusive interview with The Associated Press, Thursday, April 24, 2014, in Chicago. Umanos, an American pediatrician who was killed when an Afghan security guard opened fire Thursday at a Kabul hospital, was dedicated to helping poor children, volunteering in Afghanistan to train young doctors and periodically returning to Chicago to work in a Christian clinic on the city's southwest side. (AP Photo/Charles Rex Arbogast), APTOPIX