Maryjo “MJ” Thomas has served as the Section Chief for the FBI’s Counterproliferation Section since March 2017.
In 2015 she was assigned to FBI Houston as the National Security Branch Assistant Special Agent in Charge. In April 2010 Ms. Thomas was assigned as a Supervisory Special Agent for FBI Louisville’s Counterintelligence Squad.
Ms. Thomas entered on duty with the FBI in June 2000. After graduation from the FBI Academy, she was assigned to work Cyber matters in the FBI Pittsburgh Field Office.
Following the attacks on September 11, 2001, Ms. Thomas transitioned to work counterterrorism matters in Pittsburgh, later transferring to FBIHQ Counterterrorism Division. From 2003 through 2006, she served in several overseas temporary assignments in Iraq and Afghanistan as part of the FBI’s Terrorist Financing Operations Section supporting the exploitation and target efforts of DOD Special Forces.
From 2006-2009 Ms. Thomas served as the Special Assistant to the Executive Assistant Director for the Science & Technology Branch dedicated to working with DOD and Special Forces assigned in Iraq and Afghanistan providing investigative expertise utilizing biometrics to identify and track the adversary. From 2009-2010 she served as the Unit Chief for the Technical Response Unit responsible for FBI Communications overseas, special events and in support of crisis response.