Sheppard in Photos Published May 25, 2017 By Liz H. Colunga 82nd Training Wing Public Affairs SHEPPARD AIR FORCE BASE, Texas -- Airmen Scottie Reed, 361st Training Squadron students learn how to install the reduction gear box onto a T-56 engine at Sheppard Air Force Base, Texas, May 23, 2017. This training course lasts 15 weeks with a total of nine blocks.(U.S. Air Force photo by Liz H. Colunga/Released)