Timothy A. Byrnes talks about his new book Reverse Mission [2], which looks at three religious communities and the unique ways they have shaped U.S. foreign policy. Byrnes, a professor of political science at Colgate University and a panelist on the Ivory Tower Half Hour [3], focuses here on the story of the six Jesuits who were killed in El Salvador by military forces and the coordinated response of Jesuits in the United States.