the line of duty. the rio grande is a hotbed of activity for these cartels. it s the only thing separating the lone star state from mexico in many areas. illegal immigrants try to swim across. drugs are moved on rafts and it s common for officers who come out of fire. our own fox news crew saw what was going on down here just last week. there are vans parked along the side. this is a continual process. we are trying to stay ahead of the game. these marine intercepter toes are helping stay ahead of the game. 900 horse power, fully automatic machine guns and 34 feet long. the key is to intimidate the bad guy by their sheer presence and