planned drawdown of troops at a much lower cost. we ll keep you updated on fox. jenna: police in texas are bringing out the big guns now, ramping up their fight to head off violent drug cartels south of the border. the texas department of public safety deploying its own fleet of armored gun boats patrolling the rio grande. casey stiegel live in the dallas bureau with or on this. reporter: we ve been calling america s third war and that it is but now local law enforcement has a new tool in its arsenal to battle these violent cartels. support vehicle in the south side. reporter: the rio grande river in south texas, places where only a few hundred feet of water separates mexico from the u.s.. it is very rough down here. reporter: and that is putting it lightly. officers at gunpoint and three rafts. reporter: almost every single day the smugglers try to use the river to move, weapons and people into our