MEDEVAC TRAINING U.S. Marines load a mock casualty onto a medical evacuation helicopter during Exercise Mojave Viper on Marine Corps Base Twentynine Palms, Calif., March 26, 2009. The Marines are assigned to the 1st Battalion, 5th Marine Regiment. Mojave Viper is a training evolution program to aid Marines in their upcoming deployment to Afghanistan. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 770153-R-BEN82-559.jpg Photo Gallery