Staff Sgt. Shane Smith, a 433rd Maintenance Squadron jet engine technician, talks about the functions of a jet engine for a C-5M Super Galaxy and his experience as an Air Force Reservist to Air Force Junior Reserve Officer Training Corp students from John Jay High April 19, 2017 at Joint Base San Antonio-Lackland, Texas. The students toured engine and structural engineering shops at the 433rd Airlift Wing and also saw a Military Working Dog demonstration at the 802nd Security Force Squadron. (U.S. Air Force photo by Tech. Sgt. Carlos J. Trevino) (released)