Tearful Oscar Pistorius takes stand in murder trial
Oscar Pistorius, on trial for the murder of his girlfriend, gave a trembling apology to Reeva Steenkamp's mother. Pistorius said he mistook Steenkamp for a burglar when he shot her through a closed bathroom door and is now so traumatized that he takes sleeping pills and is on anti-depressants. Debora Patta reports.