Elizabeth and Stephen Alderman : My world stopped , and it still is totally out of kilter . Our youngest son , Peter , was killed on 9/11 . After his death , they knew they had to leave a mark that was needed . They set up the Peter - Alderman Foundation to help people affected by terrorism . Elizabeth , Stephen Alderman : Peter would be proud of the work that bears his name .
Elizabeth and Stephen Alderman : Our youngest son , Peter , was killed on 9/11 . After his death , they knew they had to leave a mark that was needed . They set up the Peter - Alderman Foundation to help people affected by terrorism . Elizabeth , Stephen Alderman : Peter would be proud of the work that bears his name .