McGHEE TYSON ANGB, Tenn. -- Master Sgt. Dwayne D. Ackerman, a physical fitness instructor with The I.G. Brown Air National Guard Training and Education Center, is presented the United States flag by Col. Bradley McRee during his retirement ceremony from the U.S. Air Force, which was held on the campus of the Training and Education Center here, Sep. 11, 2009. Ackerman was stationed at the TEC for a total of 17 years and held instructor positions with the Noncommissioned Officer Leadership School, the Noncommissioned Officer Academy and the Academy of Military Science. (U.S. Air Force photo by Master Sgt. Kurt Skoglund)