PANETTA REMARKS Defense Secretary Leon E. Panetta delivers remarks at the Air Force Retirement and Appointment Ceremony, where Air Force Gen. Mark A. Welsh III succeeded Air Force Chief of Staff Gen. Norton A. Schwartz as the 20th chief of staff on Joint Base Andrews, Md., Aug. 10, 2012. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 367402-C-CZR10-393.jpg Photo Gallery