Secretary Gates announces he has accepted two resignations. Secretary of Defense Robert M. Gates announces he has accepted the resignations of both Secretary of the Air Force Michael W. Wynne and Air Force Chief of Staff Gen. T. Michael Moseley during a Pentagon press briefing on June 5, 2008. SHARE: Download: Full Size (0.03 MB) Credit: VIRIN: 755446-Y-JYU85-995.jpg Photo Gallery