Teacher saved lives when she tackled gunman during Oregon school shooting, police say

A teacher saved lives when she tackled the gunman during Thursday's school shooting in Oregon, police say. Three children and a teacher were killed in the attack. CBS News' Elizabeth Campbell and Anna Schecter have more.

A teacher saved lives when she tackled the gunman during Thursday's school shooting in Oregon, police say. Three children and a teacher were killed in the attack. CBS News' Elizabeth Campbell and Anna Schecter have more.