(Editor's Note: This story has been updated to include a statement from Defense Secretary Chuck Hagel that was released at 2:21 p.m.) Michael Donley, the longest-serving secretary in the history of the Air Force, will step down from that position on June 21, the service announced today. Donley has held the Air Force's top civilian post since the summer of 2008, first on an acting basis before being confirmed by the Senate in October of that year. He also...
