The association is concerned that U.S. September 11 , helping the families of the victims and not only launched a free application on AppStore dedicated to one of the blackest pages of history of the last century.
With this application you can make a virtual tour of the Twin Towers, listen to audio and video fragments of the rescuers and witnesses of the event, see many images have a visually augmented reality of the situation pre- September 11th and see a number of historical photos of place .
