Charles Duelfer is the Chairman of Omnis, Inc, a consulting firm in McLean, Virginia. He was the Special Advisor to the Director of Central Intelligence for Iraq WMD. He led the Iraq Survey Group investigation into Iraq, which conducted the investigation of Iraq's WMD programs. Previously, Duelfer was the Deputy Executive Chairman of the UN Special Commission on Iraq (UNSCOM). He also served in the Political-Military Bureau of the State Department. Duelfer is the author of the book, Hide and Seek: The Search for Truth in Iraq.