Duehring joined the United States Department of Defense , becoming Principal Deputy Assistant Secretary of Defense for Reserve Affairs . As there was no Assistant Secretary of Defense for Reserve Affairs from May 31 , 2001 to October 9 , 2002 , Duehring was performing the duties of the Assistant Secretary of Defense for Reserve Affairs in the period immediately following the September 11 attacks
September 11 attacks
September 11 attacks
Craig W. Duehring