US Air Force Pararescuemen of the 129th Air Rescue Wing, Moffett Field, Mountain View, California, and Chilean Commandos of the Fuerza Aerea de Chile carry victims of a simulated crash to a Chilean UH-60 Blackhawk helicopter for transport to a medical facility in the Atacama Desert set up by personnel of the California Air National Guard and Wilford Hall Medical Center, Lackland Air Force Base, Texas, during Exercise CHILE TCA 2000. The event, part of an exchange dating back to 1995, was designed to test interoperability of U.S. and Chilean forces in disaster response