U.S. Marines with 3rd Battalion, 3rd Marine Regiment, a part of Marine Rotational Force – Darwin (MRF-D), conduct fast rope training at Mount Bundey Training Area, Northern Territory, Australia on August 6, 2019. The training was conducted to enhance the Marines skills when fast roping from a MV-22B Osprey aircraft in the event it cannot land, or a quick insertion is necessary. (U.S. Marine Corps video by Lance Cpl. Brandon Salas)