Served in clandestine CIA in post-9-11 conflict zones
Shortly before the terrorist attacks of September 11, 2001, he began training with the Central Intelligence Agency. He then served for eight years as an undercover operations officer with the National Clandestine Service. His assignments included
multiple tours of duty in conflict zones in the Middle East, Northern Africa, and South Asia. In 2009, he took a leave of absence to attend the Wharton School, ultimately resigning from the agency in 2010 after a decade of distinguished service.
Source: Wikipedia article on 2016 presidential hopeful
, Aug 12, 2016