I can only remember seeing it on NBC, the only Chanel we get at our camp. It was a breaking news thing, live, and he addressed the people of New Orleans. Keep checking, I know I saw it and I remember discussing it with others during that time. Best I can do right now. Take it or leave it but I know what I saw.
Not sure if it is here. I could not get the audio to play. http://georgewbush-whitehouse.archives.gov/news/releases/2005/08/