Retired FBI official on Wisconsin school shooting

Chris Piehota, retired FBI executive assistant director, joined CBS News to discuss Monday's school shooting in Madison, Wisconsin, that killed two people and sent at least six other people to the hospital.

Retired FBI official on Wisconsin school shooting
Chris Piehota, retired FBI executive assistant director, joined CBS News to discuss Monday's school shooting in Madison, Wisconsin, that killed two people and sent at least six other people to the hospital.