Tech. Sgt. Corey D. Murphy, 433rd Maintenance Squadron aerospace propulsion technician, briefs 40 students from the Inter-American Air Forces Academy ,on the new GE CF6-80C2 turbofan engine that the C-5M Super Galaxy aircraft uses July 18 at Joint Base San Antonio-Lackland. IAAFA students are from Latin American nations who study courses taught in Spanish in subjects ranging from professional military education, operations and support to aircraft and systems training.