it is a -- it will be the last thing that people pass as they come down to bedrock as they come down from the memorial plaza they will pass the survivors' staircase. >> everything about this seems to scream for raw. you want -- almost as if you want to bring the terror, the fear, the noise of that day to the senses of the visitors. >> that level of realness needs to be here in order to tell what actually happened this is not going to be an overly finished, overly fancy place this is a place that is sacred. >> sacred because it is where remains of some of the victims of 9/11 are buried. >> when people get to bedrock they will be standing in front of a wall, behind which the unidentified remains of those that were not given back to family members will be brought in a very private space behind that wall. >> i don't want any little piece of my son to be brought