Part 2: School safety changed forever after Heath shootings

Paducah, Ky – Lisa Autry brings us part two of her series on the 10th anniversary of the Heath High School shootings in Paducah, Ky. Today's report focuses on how school security changed in the aftermath of this, and other shootings around the nation. We hear from current Heath principal Russ Tilford, who was a teacher at the school in 1997, and Jon Akers, with the Kentucky Center for School Safety.