U.S. Army Col. Flem B. Walker Jr., the incoming commander

U.S. Army Col. Flem B. Walker Jr., the incoming commander of the 3rd Expeditionary Sustainment Command (ESC), speaks to Soldiers and family members during the a change of command ceremony in Natcher Physical Fitness Center at Fort Knox, Ky., June 18, 2013. Walker officially assumed command from Brig. Gen. Kristin K. French, the outgoing commander of 3rd ESC during the ceremony. (U.S. Army photo by Staff Sgt. Candice L. Funchess/Released)