Gary D. Brown

Colonel Gary D. Brown is an American lawyer and former officer in the United States Air Force. He was the official U.S. observer to the drafting of the Tallinn Manual on the International Law Applicable to Cyber Warfare (2013) and is a member of the International Group of Experts that authored Tallinn Manual 2.0 (2017). Professor Brown also appeared as the legal expert in the documentary film Zero Days (2016).

Guantanamo military commission
In 2017 Brown was appointed the legal advisor to a Guantanamo military commission's newly appointed Convening authority, Harvey Rishikof.

Rishikof and Brown's appointments were terminated in early 2018. Observers commented that their termination suggested a disagreement between the pair and their superiors at the Pentagon.

In July 2020 Brown told National Public Radio that he and Rishikof had been negotiating plea agreements with the lawyers of the men facing charges. They'd take the death penalty off the table, if the suspects agreed to plead guilty and accept a sentence of life imprisonment.

Whistleblower
In 2019 Brown formally filed a whistleblower report alleging substantial government waste, at Guantanamo. According to Brown, operating costs at Guantanamo had been $6 billion.