Other previous positions include assignment to the United States National Academy of Sciences as co-director of the US-China Education Clearinghouse, adviser to the Congressional Office of Technology Assessment, and consultant to numerous U.S. government agencies and private sector organizations.

He served as the senior German linguist in the Office of the Deputy Chief of Staff for Intelligence, USAREUR and 7th Army in Heidelberg, Germany.

[5] The White House statement goes against the report Fingar helped write; namely that Iran had stopped its program when at the same time the US knew of a second, secret site for enrichment.

The Bundesnachrichtendienst (BND), Germany's foreign intelligence agency, has amassed evidence of a sophisticated Iranian nuclear weapons program that continued beyond 2003.

[6] In October 2020, Fingar signed a letter stating the Biden laptop story “has the classic earmarks of a Russian information operation".

Fingar guided INR through more than a decade of continuous change, reinvention, and rejuvenation in response to shifting foreign policy challenges.

Tom Fingar's accessible management style and willingness to adopt inventive technologies and a "team" approach greatly enhanced the output of the Bureau and elevated the morale of its staff.

Imbued with what former Secretary of State Colin Powell once termed Tom Fingar's "moral courage and sense of purpose," INR has become an "outstanding intelligence outfit," with a reputation that continues to represent integrity, experience, and respected analytic judgments.