During Day 5, CTU found out that a shipment of 20 canisters of Sentoxnerve gas was about to depart from the Port of Long Beach. CTU contacted Customs and Border Protection to help them intercept the shipment. A team led by Agent Finn and including Agents Atkins, Olivier, and others, arrived at the port. After spotting the container, Finn and several other agents raided the container, but all they found was Schaeffer's dead body.("Day 5: 12:00pm-1:00pm")
In real life, the CBP is an agency of the United States Department of Homeland Security, tasked with the protection of U.S. borders from illegal immigration, drug trafficking and other contraband, as well as the regulation and facilitation of international trade, collecting import duties, and enforcing U.S. trade laws.