LANGLEY AIR FORCE BASE, Va. -- U.S. Secretary of Defense Robert Gates speaks to Airmen 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 Moseley 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)