Size Rocks News Today

>> reporter: one of the things that you notice when you come near the fence here at the border is that you find rocks everywhere. agents say that theyre victims of attacks every day, and some rocks like this one can cause some real harm. suvs show the signs of damage, and agents riding bicycles are especially at risk. >> you can see those medium size risks to brick-size rocks. theyre pretty big, not your average size rocks. >> reporter: many times, rock throwing is a diversion. agents reasonable...