A pile of rocks near the main gate of Fort Irwin, Calif., has become a memorial to Army units that have traveled from around the world to hone their warfighting skills at the National Training Center. While at the sprawling desert base, they face hazards ranging from heat exhaustion to tank accidents, but a team of emergency medical technicians, backed by UH-60 Black Hawk helicopters configured for aeromedical evacuation, helps them stay fighting fit. Photo by Douglas J. Gillert. A pile of rocks near the main gate of Fort Irwin, Calif., has become a memorial to Army units that have traveled from around the world to hone their warfighting skills at the National Training Center. While at the sprawling desert base, they face hazards ranging from heat exhaustion to tank accidents, but a team of emergency medical technicians, backed by UH-60 Black Hawk helicopters configured for aeromedical evacuation, helps them stay fighting fit. Photo by Douglas J. Gillert. SHARE: Download: Full Size (0.09 MB) Credit: VIRIN: 500322-G-RIA21-027.jpg Photo Gallery