Our Team
Terrance Gainer - Chief Security Officer

Terrance Gainer

Chief Security Officer

The Honorable Terrance (Terry) Gainer advises GTI on security matters. A former Illinois State Police director, Chicago police detective and U.S. Navy Reserve captain, Gainer most recently served as the 38th United States Senate Sergeant at Arms, providing security services to Senators in their Washington D.C. and state offices, and maintaining security in the Capitol and Senate office buildings and leading a force of nearly 1,000 personnel. Retiring as the longest serving Senate Sergeant at Arms since World War II, he was the first to have held both that position and that of the chief of the U.S. Capitol Police.

Chief Gainer began his law enforcement career as a police officer in the Chicago Police Department and rose through the ranks, including many years as a homicide detective. An accomplished attorney, Chief Gainer served as chief legal officer of that department before he entered the Illinois State Government as Deputy Inspector General and Director of the Illinois State Police. He served at the U.S. Department of Transportation as Special Assistant to the Secretary before being appointed as Director of the Illinois State Police.

In 1998, Chief Gainer moved to Washington, D.C. where he served as Executive Assistant Chief of Police for the Metropolitan Police Department and four years later was selected to be the Chief of the U.S. Capitol Police. He then entered the private sector as a Chief Executive Officer responsible for a multimillion dollar innovative law enforcement program supporting military operations in Iraq and Afghanistan. The following year, the U.S. Senate appointed Chief Gainer as the Senate Sergeant at Arms.

While serving as Sergeant at Arms, Chief Gainer was appointed a Commissioner on the Independent Commission on the Security Forces of Iraq, charged with conducting an independent assessment of the Iraqi Security Forces and reporting the findings to Congress. He also served with the Special Envoy for Middle East Regional Security, which was created to advance the resolution of the Israeli-Palestinian dispute by assisting in strengthening security institutions.

Born in Chicago, Chief Gainer is a decorated veteran who served in Vietnam and retired as a captain in the United States Navy Reserve. His degrees include a Bachelor’s degree in Sociology, a Master of Science in Management, a Juris Doctor degree and an Honorary Doctorate of Humane Letters. He is married and has six children and 14 grandchildren.

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