Glenn is a noted author and avid reader. As Deputy National Intelligence Officer, Mr. Carle led the 17 agencies of the intelligence community in preparing the US government's most senior assessments of transnational threats to the nation for the president, members of cabinet and the nation's most senior military leaders. He was detailed to the Executive Office of the President, and has extensive negotiating and policy experience. Glenn also led sensitive programs in the Directorate of Operations at the Central Intelligence Agency in four continents. He did a BA in Government at Harvard, an MA in European Studies and International Economics at The Johns Hopkins School of Advanced International Studies, and further masters study in International Relations at the Institut d'Etudes politiques de Paris. Glenn was an intercollegiate ice hockey player, and was elected to his hometown’s athletic hall of fame.