911day.org is a non-profit orgnization provides tools and information about 9/11 attack. The goal of the site is to encourage visitors to post their good deed and share on facebook.
Visual design is very important to establish emotional connection with users. But good photographs for 9/11 event out there are for editorial use only.
Suggested the client have their staff in New York go there and take some good pictures. They worked out really well!