Over half of America's southern border is created by the Rio Grande, a murky brown river that snakes its way between Texas and Mexico. A total of 23 bridges cross the river, linking the United States and its southern neighbor.
Every day 250,000 people, 12,000 cargo trucks, and 5,000 railroad cars cross the bridges for a multitude of reasons. Some legal - and some not.
The Department of Homeland Security division responsible for the bridges is the CBP - Customs and Border Protection.
For the first time in history, a TV production company has been granted unrestricted access to these bridges, the processes and the technology that the CBP deploys in its mission to keep America safe.
3rd birthday drinks from 5.30 pm Monday 5th October
