I do know that, that wall was in danger, and they made a decision based on that danger, that it had of destroying other things that they did it in a controlled fashion.
I am not sure what exactly Kerry is talking about, this is the guy after all who is still confused as to whether he spent Christmas in Cambodia. Most likely he is just referring to the clean up efforts, where they were worried about damaging the slurry wall while taking down the remains of the buildings. Of course in truther logic, politicians and businessmen never just get confused or misstate something, it is always just some secret knowledge they have. I guess Kerry learned this from those Skull & Bones meetings.