Chilean Airman First Class Sergio Retamales, listens as a classmate speaks during Crash Damaged Disabled Aircraft Recovery at Cerro Moreno Air Base in Antofagasta, Chile, June 5, 2018. The Chilean Airmen were given classroom instruction covering an aircraft recovery plan, personnel protective equipment, and CDDAR operation followed by hands on training. (U.S. Air Force photo by Staff Sgt. Angela Ruiz)