Tech. Sgt. Ian Messer and Tech. Sgt. Edgar Ayala, both 366th Maintenance Squadron aerospace propulsion craftsmen at Mountain Home Air Force Base, recently spent a month-long temporary duty at Cerro Moreno Air Base in Antofagasta, Chile. Their mission was to train the Chilean airmen to save money, time and manpower through hands-on training on jet engine fan blade repairs for the F100-Pratt and Whitney-W-220 jet engines.