Could we have prevented in 100% certainty? I don't think anything is that certain. However, we would have had a very, very good chance for preventing it.

Sibel Deniz Edmonds (born 1970) is an Iranian-American former FBI translator and founder of the National Security Whistleblowers Coalition (NSWBC). Edmonds testified before the 9/11 Commission but her testimony was excluded from the official 567 page 9/11 Commission Report.