"Mohammad Hadi Hadayati, Kabul University's vice chancellor shows a photograph, from left, slain American Jon Gabel, his mother, his father Gary Gabel, who was also killed, and himself, during an interview with the Associated Press in Kabul, Afghanistan, Saturday, April 26, 2014. An Afghan police security guard opened fire on foreigners, on Thursday, April 24, 2014, as they entered the grounds of Cure International Hospital, killing three people, including pediatrician Dr. Jerry Umanos of Chicago. On Saturday, Kabul University vice chancellor Mohammad Hadi Hadayati identified the other two Americans killed in the attack as health clinic administrator Jon Gabel and his visiting father, Gary, also from the Chicago area. Jon Gabel's wife, also an American, was wounded, Hadayati said. ""We have lost a great man, a great teacher, a man who was here only to serve the Afghan people,"" Hadayati said. Jon Gabel worked for the U.S.-based charity Morning Star Development and ran a health clinic at Kabul University, teaching computer science classes in his spare time, Hadayati said. Jon Gabel's parents were visiting from Chicago, and Hadayati had lunch with the whole family the day before the attack. (AP photo/Rahmat Gul)"
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