navy s.e.a.l.s got in there and what they did once they were in a special interview we have coming up. the scene of the worst terror attack on u.s. soil looked like a v-day celebration, hundreds of people have been gathering at new york city's ground zero to mark the death of osama bin laden. president obama will join them on thursday. he'll visit the site and meet with the families of 9/11 victims. jason carroll has been talking to family members and joins us live from the world trade center site. good morning, jason. >> good morning to you, christine. this morning i actually spoke to a man who lost his son on 9/11, his son jonathan was a firefighter from queens. when i talked to lee about what he was feeling, he's still trying to process everything that's happened. when we first heard about what happened with osama bin laden, he cried and certainly there was some tears out here last night. also, some celebrations for the second night in a row, people coming down here, wanting to take part, and celebratory sort of activity happening.