Intelligence Officer Anthony Shaffer.
http://en.wikipedia.org/wiki/Anthony_Shaffer_%28intelligence_officer%29
Shaffer made a protected disclosure to the 9/11 Commission staff director, Philip D. Zelikow, while undercover in Afghanistan in October 2003 regarding the existence of the ABLE DANGER program that had identified alleged 9/11 lead hijacker Mohammed Atta and three other al-Qaeda operatives operating in the United States prior to 9/11.
