CNN CNN Special Report May 10, 2015 02:13:00
Drug smugglers hurling their stolen vehicles back into the rio grande were doing it for one reason. to protect their dope at all costs. >> all units we had a splash down. we have a splashdown in the river. >> they don't mind losing the truck into the river. at the end of the day if they can recover 2,000 pounds of narcotics with an estimated street value between 600 and 800,000 that's what they're going to do is protect that inventory. >> it's going under. suspect just about on my side. >> reporter: inside mexico, the army has visibly taken over much of the security in border towns. local mexi...