Dad who stopped school shooting says he went into "mission mode"

Kaylub Giamanco described how he confronted and killed a gunman who entered Silver Rail Elementary School in Bend, Oregon, during an October 15 shooting. In his first network television interview, he told CBS Mornings that he went into “mission mode” after seeing the attacker and followed him into the school, where a teacher was already struggling with him. Giamanco said he acted to protect his daughters and others inside.