Kristen de Tineo is the Special Agent in Charge (SAC) of the Chicago Field Division for the Bureau of Alcohol, Tobacco, Firearms and Explosives. Since May 2020, she is directly responsible for executing ATF’s mission to fight violent crime and regulate the firearms and explosives industries in the Eastern District of Wisconsin, the Northern and Central Districts of Illinois and the Northern District of Indiana.
ATF’s dedicated work force is comprised of special agents, industry operations investigators (IOIs), intelligence research specialists, forensic auditors, technicians and support staff. ATF’s Chicago Field Division Special Agents combat firearms violence by focusing their investigative efforts on armed violent offenders, armed career criminals, criminal groups and gangs, and firearms traffickers while working in partnership with local, state and other federal law enforcement agencies to accomplish this mission. Explosives and arson enforcement is an integral part of ATF’s overall violent crime reduction strategy. ATF’s Chicago Field Division special agents combat arson and criminal misuse of explosives crimes by conducting investigations in partnership with local and state fire investigators and bomb squads. ATF also regulates the firearms and explosives industries. IOIs work to ensure that all firearms and explosives are stored, handled and sold in a safe manner in compliance with federal law and regulations.
SAC de Tineo began her career as a Special Agent with ATF in 2002 in the Washington Field Division, and later worked in the Los Angeles Field Division, serving concurrently on the ATF Special Response Team as a tactical medic for 11 years. In 2013, SAC de Tineo was promoted to a program manager in ATF Headquarters serving in various capacities prior to returning to the field as the Resident Agent in Charge (RAC) of the Baltimore Field Division - Hyattsville II Field Office in Prince George’s County, Maryland. In 2018, she was promoted to the Assistant Special Agent in Charge (ASAC) of the Washington Field Division.
Prior to joining ATF, SAC de Tineo served as a Nurse Corps Officer in the United States Navy. She received a Masters in Professional Studies-Homeland Security from George Washington University and a Bachelor of Science in Nursing from Marquette University.