Oregon father describes killing school shooter

Kaylub Giamanco, the 36-year-old father who killed the gunman in the Oct. 15 shooting at Silver Rail Elementary School in Bend, Ore., spoke with Oregon Public Broadcasting about the attack that killed three children and a teacher. Giamanco, whose two daughters attend the school, said he was driving by when he saw the gunman preparing to enter and acted because he felt he was the children's "last line of defense." He expressed regret that he could not save more children.