Airman 1st Class Christian Steinbessier, 361st Training Squadron aerospace propulsion apprentice course student, works on an Allison T56 turbine exhaust module at Sheppard Air Force Base, Texas, July 11, 2018. Steinbessier and his class are working to take apart the exhaust module to get a closer look at how an exhaust works. He and his team will then have to reassemble and then the cycle continues. (U.S. Air Force photo by Airman 1st Class Pedro Tenorio)