more, mark. they have silenced your voice, but your infectious laughter will always be heard and remembered. you are on our minds and in our hearts forever. god bless. reporter: the site may be sacred ground, but it s also a symbol of renewal. 1 world trade center is set to be open within the next two years. museum financing was announced to be set last night, that means the museum is set to be open by this time next year. the memorial that opened on september 11th last year, four-and-a-half million people have visited that, seen those waterfalls overwhelming in their simplicity for themselves the very first time. but for some like former new york city mayor rudy giuliani, he fears the nation may forget. i m worried that too many americans may be forgetting, and we can t forget. this is not over. it s not like pearl harbor. this is still an ongoing war against us by islamic extremist