ABRAMS FOUR Four M1A1 Abrams tanks line up on the firing line before a qualifying range on Fort Irwin, Calif., July 7, 2009. The tank crews are assigned to the 3rd Infantry Division's 3rd Heavy Brigade Combat Team. Tank crews were required to qualify with their weapons systems before they began their two-week training rotation in the Mojave Desert. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 375736-Z-YAC48-362.jpg Photo Gallery