U.S. Marines fire their weapons under the cover of smoke during an assault on an enemy position during Exercise Koolendong on Bradshaw Training Area, Australia, Aug. 16, 2014. U.S. Marines fire their weapons under the cover of smoke during an assault on an enemy position during Exercise Koolendong on Bradshaw Training Area, Australia, Aug. 16, 2014. SHARE: Download: Full Size (1.97 MB) Tags: Photo Essays Credit: VIRIN: 065939-M-EVH06-488.jpg Photo Gallery