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Name: D'Agostino, Thomas
Current Position: Former Undersecretary

Thomas Paul D'Agostino has served since August 2007 as the Undersecretary for Nuclear Security at the Department of Energy and the Administrator for the National Nuclear Security Administration. He graduated from the United States Naval Academy in 1980 with a bachelor’s in Physical Science, from Johns Hopkins University in 1992 with a master’s in Business Finance and from the Naval War College in 1997 with a master’s in National Security Studies.

 
He spent eight years on active duty in the navy as a submarine officer onboard the USS SKIPJACK (SSN 585) and with the Board of Inspection and Survey where he was the main propulsion and nuclear reactor inspector. D'Agostino achieved the rank of captain in the U.S. Naval Reserves where he has served with the Navy Inspector General and with the Deputy Chief of Naval Operations for Submarine Warfare in developing concepts for new attack submarine propulsion systems. He later served with the Deputy Chief of Naval Operations for Plans, Policy, and Operations in the Navy Command Center in the Pentagon where he was the French Desk Officer for the Chief of Naval Operations responsible for all politico-military interactions with the French Navy and served as the duty captain at the Navy Command Center.
 
From 1989 to 1996, D'Agostino worked in numerous assignments within the federal government in the startup of the department's tritium production reactors and at the Naval Sea Systems Command as a program manager for the SEAWOLF submarine propulsion system. He then became the deputy director for the Nuclear Weapons Research, Development, and Simulation Program where he directed the formulation of programs and budget for R&D supporting the Stockpile Stewardship Program (SSP) at the DOE. He later served as the Assistant Deputy Administrator for Program Integration where he supported the deputy administrator and directed the formulation of the programs, plans and budget for the SSP. He first joined the NNSA as the Deputy Administrator for Defense Programs and directed the Stockpile Stewardship Program.
 
 
 
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