Welcome to ATF’s St. Paul Field Division. From the pristine Lake Michigan shores of Wisconsin, extending west through Minnesota’s “Land of 10,000 Lakes,” and continuing to the Black Hills of South Dakota and the Badlands of Theodore Roosevelt National Park in North Dakota, the St. Paul Field Division has a large geographic area of responsibility. Our dedicated work force is comprised of special agents, investigators, auditors, technicians and support staff. Read more about the St. Paul Field Division.