Ryan Rollinger, Harrisburg High School assistant principal, talks with Ken and Betty Andela, whose grandson goes to Harrisburg High School, in the cafeteria area 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.