WEAPONS LESSON U.S. Marines prepare to demonstrate how to fire their weapons to Australian soldiers after hiking on Robertson Barracks in Northern Territory, Australia, April 15, 2014, to acclimate the to the area's humidity. The Marines are assigned to Company A, 1st Battalion, 5th Marine Regiment, Marine Rotational Force Darwin. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 515464-R-GUI99-937.jpg Photo Gallery