SMOKE COVER 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. During the exercise, Marines established a bilateral expeditionary command in austere conditions. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 372389-Y-ETU07-543.jpg Photo Gallery