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, was killed when an Afghan security guard opened fire Thursday at a Kabul hospital. "Our families and friends have suffered a great loss, and our hearts are aching," said Schuitema. "We don't hold any ill will towards Afghanistan in general or even the gunman who did this. We don't know what his history is." (AP Photo/Charles Rex Arbogast)