McGHEE TYSON AIR NATIONAL GUARD BASE, Tenn. -- Col. Richard B. Howard, commander of The I.G. Brown Air National Guard Training and Education Center, here, presents the civil service 20-year pin to Edna C. Davis, secretary, upon her retirement from civil service at a local restaurant, Nov. 23, 2009.  Also pictured is Davis&#39; husband, Jim Davis.  Davis worked for 17 years as the secretary for the Academy of Military Science, the Air National Guard&#39;s officer commissioning program.  (U.S. Air Force photo by Master Sgt. Mavi Smith/Released)