- M.A., West European Studies, Indiana University Bloomington, 2004
- B.A., Political Science, History, Gonzaga University, 1992
Sean Long serves as an adjunct lecturer for O'Neill specializing in comparative and international policy, and organizational management. Long came to O'Neill following 25 years of active duty service as an officer in the United States Army. While in the Army, he served in various leadership and staff positions. Long also served as an Army foreign affairs specialist, working for organizations such as the Defense Intelligence Agency, U.S. embassies (Paris, France and Belgrade, Serbia), U.S. European Command, U.S. Forces – Iraq, and Headquarters, U.S. Army, Europe. Over the course of his career, Long has lived and worked in five different countries promoting U.S. national security, defense cooperation, and diplomacy.