the semisubmersibles travel three main smuggling routes according to the navy. direct to mexico or central america, takes around six days. the longest route through the galapagos island takes more than two weeks. along the morn reaches of the pacific coast, speed boast boths remain the number one enemy. they dash into panama or costa rick rica as little as six hours. they choose the route depending on the cargo and based on their analysis of our ability to detect them in the area. reporter: joining a coast guard team on a speedboat they call midnight express. colombia s biggest seaport, handling thousands of containers every day, all potential stowaway sites for drugs. this huge tuna fishing fleet, too. ships captains may be tempted by easy money, but are wary of the