SECRETARY'S OFFICE New Defense Secretary Leon E. Panetta, left, and his wife, Sylvia, host Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, right, and his wife, Deborah, in his office, July 1, 2011. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 290622-L-EHF32-832.jpg Photo Gallery