Before assuming command of the SEVENTH Fleet, Thomas assisted the
Chairman, Joint Chiefs of Staff, in executing his duties as
principal adviser to the president and secretary of defense.
The son of a career Marine, Thomas graduated from the University of
California with a Bachelor of Science in Civil Engineering. He holds
a Master of Science in National Security Studies from the National
As a career submarine officer, Thomas has served on fast-attack
submarines operating in both U.S. Pacific Command and U.S. Central
Command theaters of operation. His assignments included USS Guitarro
(SSN 665), USS Permit (SSN 594), USS Asheville (SSN 758) and USS
Bremerton (SSN 698) where he served as commanding officer.
Additionally, he took command of USS Tucson (SSN 770) while serving
as deputy commander, Submarine Squadron 11. Thomas served as
commander, Submarine Force, U.S. Pacific Fleet Representative West
Coast, Commander, Submarine Squadron 11 from April 2004 through July
2005, and Commander, Task Force 74/54 in Yokosuka, Japan.
Ashore, Thomas served as flag aide to the deputy chief of naval
operations (OP-07); program analyst in the Secretary of the Navy’s
Office of Program Appraisal; director of Operational Support (CNO
N23); assistant deputy director for Politico-Military Affairs,
Western Hemisphere, J5, on the Joint Staff; director, Plans and
Policy (N5) for Naval Special Warfare Command; director, Strategy
and Policy Division (OPNAV N51); Vice Director of Operations, J3, on
the Joint Staff; and, most recently, Chief of Staff, J5, on the