Army Gen. Frank J. Grass replaces Air Force Gen. Craig R. McKinley as Chief of the National Guard Bureau. McKinley, who had served as NGB Chief since November 2008, formally retired Nov. 1, 2012.
The Air Force could conduct an operation like Israel's successful air campaign against Iran's nuclear sites, military leadership and air defenses, but readiness issues would make it risky, airpower experts said. Limited spare parts and training, low mission capable rates and few flying hours would put a drag on USAF's…