we've been talking a lot today about holiday travel problems. but even when things are running smoothly, we only see a fraction of what goes on at the airport. so we decided to go behind the scenes at the world's busiest airport in atlanta to meet some of the people who make it tick. that includes officer jeannette franklin who, would the overnightshift. >> i'm en route to 58. >> uh-huh. >> blue jeans. >> you've been here for three to four days now. okay? if you don't have airport business here, there's no reason why you should be here. >> okay. >> we're going to go ahead and get you a criminal trespass warning. >> typical night. well, that's the thing about policing. we can never say there's a typical anything. i come in to work at 10:30 at night, and my shift ends at 6:30 in the morning.