one film getting a lot of buzz right now. last days of vietnam. it's a remarkable story. many of us have never heard before. watch this. >> they borrowed a truck and i drove them to the air base. i told them when you hear three thumps, that means hole the baby's mouths and don't breathe or talk or make any noise. we are going through the post. >> last days of vietnam is a compelling look at how thousands of people were rescued in the fall of saigon at the end of the vietnam war. miguel marquez is over at the sundance film festival. what a great assignment you have. you spoke to rory kennedy who made the film. what struck you the most about this story? >> it is an amazing story. i should note for the record, we are in the cnn films lounge. this is the hottest ticket in town. famous people like this.