Dr. Douglas A. Brook is Acting Under Secretary of Defense (Comptroller) and Chief Financial Officer of the Department of Defense. He also serves as Assistant Secretary of the Navy (Financial Management & Comptroller).

Prior to reporting to the Pentagon, he was Professor of Public Policy and Director of the Center for Defense Management Reform at the Naval Postgraduate School (NPS) in Monterey, California. From 2002 until 2005,

Dr. Brook was Dean of the NPS Graduate School of Business and Public Policy.

Before joining NPS, Dr. Brook was Vice President - Government Affairs for The LTV Corporation.

Prior to joining LTV, Brook served in two Presidentially appointed positions. In 1992 he was Acting Director of the U. S. Office of Personnel Management (OPM), the central personnel management agency of the Federal government. From 1990 to 1992 Brook was Assistant Secretary of the Army for Financial Management.

Dr. Brook began his career as Director of Public Finance of the National Association of Manufacturers in New York. Subsequently, he joined the Libbey-Owens-Ford Company and served as Vice President and head of the company’s Washington, D.C. office. In 1982 he founded Brook Associates, Inc., a public affairs consulting business serving corporate and trade association clients, which he managed until assuming duties at the Pentagon. He also served two elected terms on the Town Council of Vienna, Virginia.

Dr. Brook grew up in East Detroit, Michigan. He attended the University of Michigan, graduating with a Bachelor of Arts degree in political science in 1965 and a Master of Public Administration degree in 1967. In 2001 he earned his Ph.D. in Public Policy at George Mason University. He also completed the 1977 Executive Program at the University of Virginia’s Colgate Darden Graduate School of Business Administration.

Brook served on active duty as a Navy Supply Corps officer and was a member of the Naval Reserve for 30 years. He retired with the rank of Captain.