Updates on Colorado Shooting

Local sheriff in Colorado at presser just now said the school shooter bought the shotgun, legally, on Dec. 6.   Also, he did not know the girl who got shot (her  name now released) and she was just in the wrong place at the wrong time.  And he shot himself less than 90 seconds from first shot.  More:  Shooter intended to kill many more than the librarian, for he came with shotgun, machete and three explosive devices.  A friend's final conversations.