Ryan Rollinger, Harrisburg High School assistant principal, talks with Darien Poelstra, 17, left, and Brittan Murphy, 18, right, both Harrisburg High School seniors, as they sell baked goods for a free-will donation for a Health Occupation Students of America fundraiser during parent-teacher conferences Thursday, Oct. 8, 2015, at Harrisburg High School in Harrisburg, S.D. Rollinger tackled Mason Buhl, a student and shooting suspect, after principal Kevin Lein was shot in the arm in his office.