TARGET TASK U.S. Air Force personnel fire M-4 rifles while wearing their protective masks, April 30, 2008, on Balad Air Base, Iraq. The airmen are assigned to the 332nd Expeditionary Security Forces Squadron, which is responsible for safety on the base. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 185009-S-TRK42-676.jpg Photo Gallery