disturbing of all to holland, more coordination, lookouts, even reconnaissance in smuggling. >> one thing you have to understand is how well coordinated this is and what the level of scouting and planning and organization is. >> right curve in the road coming up. >> reporter: these videos of chases at first made no sense. >> you getting a shot of this? >> yeah, i got it. >> reporter: drug runners caught in the u.s. and then racing back to mexico. >> coming up to the river. >> reporter: their stolen vehicles hurled full speed into the rio grande. >> oh, my god. splash down. >> reporter: at first, law enforcement believed these were desperate attempts to escape. then they began to hear radio traffic. coordinates. >> going to be splashdown. the truck there. >> right there. oh-oh! >> in the water. >> that's a recovery team.