>> well, i think andrew exum said all the things that are right. the videos are shocking, the behavior is immature. it's just grotesquely. >> that's right. >> inappropriate, these are young men at war. they are dehumanized. but what i found really disturbing watching the video is the sort of smirking, these guys looking at the camera and smiling as they urinate on these corporations. it's just terrible behavior and so j daing to the united states. i just got back from afghanistan right before christmas. i met with lots of u.s. soldiers there. it's appropriate and easy to say we have so many good soldiers and officers in combat. and that these are the exception, but it is terribly damaging. these images will persist. they'll persist on the internet and in people's minds for a very long time. and they undo so much work that had been done to try to say we are a benign presence. >> woodruff: andrew exum, don't the soldiers and the marine get training about how to behave in a situation like this. >> absolutely. but again, we see these types of things ta