CNN: Authorities Release Video During Parkland Shooting, Shows Deputy Did Nothing

RUSH EXCERPT:
KING: "Important breaking news into us right now. New video from outside the Parkland, Florida, high school where the shooting took place last month and new evidence the armed school resource officer did nothing. This video just released on orders from a judge. You see in the top right there shows deputy Scot Peterson standing outside the school as kids were being shot, dying, getting hurt inside. CNN's Rosa flores is in parkland, Florida. Walk us through what we see in the video and why it's important."