Vietnam

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Jill Kalsu-Horning, left, and Bob Kalsu Jr., right, pose with their mother, Jan Kalsu McLauchlin, and pictures of Bob Kalsu Sr. and his medals Friday, April 30, 2004 in Edmond, Okla. Kalsu Sr., an All-American lineman at the University of Oklahoma and a Buffalo Bills player, was one of three NFL players to serve in Vietnam, and the only to die in that conflict. (AP Photo/Jeffrey Haderthauer)