GATES ARRIVES IN BAGHDAD Defense Secretary Robert Gates is greeted at the aircraft by Gen. John Abizaid, center, commander of U.S. Central Command, and Gen. George Casey, commander of Multinational Forces-Iraq, upon his arrival in Baghdad, Iraq, Dec. 20, 2006. SHARE: Download: Full Size (0.04 MB) Credit: VIRIN: 570878-L-VTS54-481.jpg Photo Gallery