Pentagon unveils 9/11 memorial to honor the 184 victims killed there . `` We 've tried to keep everything subtle to the extent that people can discover , '' said Keith Kaseman , the memorial co-designer . Benches are laid out in a pattern according to the year each victim was born . Son visits site with dad to honor his mom : `` I 'm very impressed '' he says, as they stand on one of the benches and look at the wall where the names of all those who died were written.
Pentagon unveils 9/11 memorial to honor the 184 victims killed there . Benches are laid out in a pattern according to the year each victim was born . Son visits site with dad to honor his mom : `` I 'm very impressed '' he says, as they stand on one of the benches and look at the wall where the names of all those who died were written.