Chairman of the Joint Chiefs of Staff Gen. Richard B. Myers, U.S. Air Force, answers a reporter's question concerning the December 21st explosion in the dining facility at Forward Operating Base Marez in southwest Mosul, Iraq, during a Dec. 22, 2004, press briefing in the Pentagon. Myers and Secretary of Defense Donald H. Rumsfeld briefed reporters on the attack. Officials are still investigating the cause of the explosion, but preliminary evidence indicates that it could be the work of a suicide bomber.