In this episode of Border Wars, Border Patrol Agents and Customs and Border Protection Officers in Laredo, Texas, work around the clock to stop illicit drugs and undocumented immigrants from slipping into the United States through the countrys largest inland port. Horse Patrol and Air Support team up to track a group of immigrants hiking through private ranchland just north of the border; Agents at the Rio Grande face off with smugglers to stop a group of suspected immigrants from rafting across the river into the United States; Customs and Border Protection Officers at a Port of Entry bridge uncover a dangerous drug rarely seen here; and Immigration and Customs Enforcement Officers team up with a Laredo SWAT team to bust a suspected coke house.