U.S. President Barack Obama delivers remarks alongside four transfer cases bearing the remains of Americans killed this week in Benghazi, during a transfer or remains ceremony in a hangar at Andrews Air Force Base near Washington, September 14, 2012. Ambassador Christopher Stevens and the other Americans died after gunmen attacked the lightly fortified U.S. consulate and a safe house refuge in Benghazi on Tuesday night. REUTERS/Jason Reed (UNITED STATES - Tags: POLITICS)