LANGLEY AIR FORCE BASE, Va. -- Airmen look on as U.S. Secretary of Defense Robert Gates speaks at the base theater June 9. Secretary Gates spoke about the transition to new Air Force leadership after the resignations of Chief of Staff of the Air Force Gen. T. Michael Mosley and Secretary of the Air Force Michael W. Wynne. “Embrace accountability in all you do,” Secretary Gates said. (U.S. Air Force photo/Senior Airman Barry Loo)