PANETTA TRIBUTE Defense Secretary Leon E. Panetta applauds Army Gen. Martin E. Dempsey, chairman of the Joint Chiefs of Staff, 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 (0.04 MB) Credit: VIRIN: 414005-C-SAZ97-400.jpg Photo Gallery