CHANGE OF OFFICE Chairman of the Joint Chiefs of Staff Navy Adm. Michael G. Mullen takes the oath of office from Marine Gen. Peter Pace during an Armed Forces Hail and Farewell ceremony on Fort Myer, Va., Oct. 1, 2007. SHARE: Download: Full Size (0.03 MB) Credit: VIRIN: 035906-Q-ONB81-235.jpg Photo Gallery