ARMED FORCES FAREWELL Defense Secretary Leon E. Panetta, far left, President Barack Obama and Army Gen. Martin E. Dempsey, chairman of the Joint Chiefs of Staff, stand for a troop review during the armed forces farewell tribute to honor the secretary on Joint Base Myer-Henderson Hall, Va., Feb. 8, 2013. Panetta is stepping down as the 23rd defense secretary. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 433849-M-PMC12-012.jpg Photo Gallery