-- than dna that they're saying. everyone wants proof. >> reporter: you said 9/11 was a traumatic day for you. ten years later, how is it? >> it still feels sad and for all that we lost. at the same time it's like we're still surviving. we are survivors. >> alex powers, thank you very much. we also want to talk to these folks here. fred and shelly, first of all, you are from chicago, but it was important to you to come and see this before you returned home. how come? >> yes, it was very important. we've both been here before separately. we decided to come together this morning. >> reporter: and why? why is it important to be here on the day that osama bin laden is dead? >> probably would have come anyway. but obviously it makes is much more significant. >> reporter: you think about the trauma, that day, how is it at this moment in history? >> i have mixed feelings. i'm happy that this has