A Chilean Army helicopter prepares to lift off after picking up a simulated casualty during a medical evacuation training scenario for Exercise Southern Vanguard 25 in Antuco, Chile, Aug. 13, 2025. Exercise Southern Vanguard 25 underscores the U.S. Army’s enduring commitment to regional partnership as U.S. forces deploy to Chile to conduct combined mountain warfare, field, and command post training alongside Chilean forces, with participation from Argentina and Peru - strengthening interoperability, shared readiness, and mutual trust while advancing regional security and cooperation across the Western Hemisphere. (U.S. Army National Guard photo by Sgt. 1st Class Sebastian Rothwyn)