hell, into the depths of hell. >> shepard: sister of firefighter lost in the attack says bin laden's death makes her feel a little better and she believes the extremists are now as upset as she was on 9/11. our senior correspondent eric shawn is here as he was that dark day about 10 years ago, eric? >> shepard, osama bin laden brought his holy war to us right here. starting with the bombing of the world trade center back in 1993. today, thousands of people continue to come here to pay their respects. let me show you something that's simply sums it all up. it's a sign put on a fence that says quietly, thank you u.s. military. they arrive here to show their gratitude in quiet celebration and for the family of the victims, 200977 people who were murdered here their joy is tempered by somber remembrances. this woman lost her son chris who was a new york stock exchange firefighter. >> we did it, chris. america did it. i know you are as proud of all