>> evans: the coast guard unloaded a huge haul in florida this week, more than half a billion dollars' worth of cocaine. with the caribbean becoming a popular drug corridor, the coast guard is increasing controls to chase down trashers at sea. cbs' jeff pegues joined the high-speed hunt. >> reporter: this 26,000-pound cocaine haul has a street value of more than half a billion dollars. seized during multiple operations in the pacific oc ocean,s where increased patrols are forcing drug smugglers to look for other routes, beyond the pacific to the u.s. tony salisbury leads homeland security investigations in miami. are they looking for weak spots in law enforcement? >> the drug trafficking