U.S. Marines with Weapons Company, 1st Battalion, 5th Marine Regiment, Marine Rotational Force-Darwin fire tube-launched, optically-tracked, wireless-guided anti-tank missiles and .50-caliber machine gun rounds during a live-fire exercise Aug. 25, 2014, at the Bradshaw Field Training Area in Australia during Koolendong 2014. Koolendong is an amphibious and live-fire exercise designed to increase interoperability between the U.S. Marine Corps and Australian Defense Force.