From left, Lt. Gen. Craig R. McKinley, director of the Air National Guard, Col. Michael L. Waggett, commander of the Air Guard&#39;s I.G. Brown Training and Education Center (TEC) and Chief Master Sgt. Deborah Davidson, TEC enlisted education commandant, watch a pass and review of Noncommissioned Officer Academy students July 31 during the TEC&#39;s 40th anniversary celebration at McGhee Tyson Air National Guard Base, Tenn. (Photo by Air Force Tech. Sgt. Kendra Owenby, Tennessee National Guard)