South Dakota representative Dusty Johnson will be in Aberdeen today making three stops. Johnson will speak to students at Aberdeen Central High School at 9:30 a.m. Following that the congressman will tour the Agtegra Innovation Center at 12:45 p.m. Finally, he will tour Northern State with president Tim Downs at 3:30 p.m. In the evening, Johnson will be speaking at the Lincoln Day Dinner, a fundraiser for the local Brown County Republicans.