President Barack Obama, Vice President Joe Biden, Deputy Defense Secretary Ashton B. Carter, Chairman of the Joint Chiefs of Staff Army Gen. Martin E. Dempsey and Army Gen. Lloyd J. Austin III, the last commander of U.S. Forces-Iraq, joined family members of returning service members to welcome those final few troops home, Dec. 20, 2011, Joint Base Andrews, Md. (DOD photo by Army 1st Sgt. Tyrone Marshall Jr.)