Tech. Sgt. Sean Preston, 433rd Maintenance Squadron aerospace propulsion technician, shows 34 Inter-American Air Force Academy students a C-5M Super Galaxy's engine Nov. 15, 2017 at Joint Base San Antonio-Lackland, Texas. The students also visited the 433rd MXS structural and sheet metals shop before touring a C-5M. (U.S. Air Force photo by Benjamin Faske)
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