Master Sgt. Daniel Hobson, 361st Training Squadron instructor supervisor for the aerospace propulsion apprentice course, watches a class as they mount a J-model engine on an E-model C-130 Hercules wing. 75 percent of all C-130 aerospace propulsion apprentice course student end up working on the J-model. This newer and upgraded engine model will allow students to gain hands on experience before they get to their first permanent station after Sheppard. (U.S. Air Force photo by Senior Airman Robert L. McIlrath)