and remembering 9/11 ten years later. the victims, the heroes, the survivors of that fateful day. we re live at ground zero today, friday, september 9th, 2011. narrator: from nbc news, this is a special edition of today america remembers, with matt lauer, live at ground zero and ann curry live from studio 1-a in rockefeller plaza. good morning, everybody. welcome to a special edition of today on a friday morning. i m matt lauer in lower manhattan. i m on a balcony overlooking ground zero. ann curry is uptown in studio 1-a. as i say good morning to you i m going to say you may be hearing noise from time to time here from our broadcast site. this is a memorial site now. there is also a lot of construction going on all around us. i think you can say progress continues to be made 24 hours a day. that noise is perfectly understandable, matt. thanks so much. good morning. i know the security was already tight there but now with this new concern about a credible but unconf