Basic Reconnaissance Course 2-20 conducts helicopter rope suspension techniques training - U.S. Marines with Basic Reconnaissance Course 2-20, Reconnaissance Training Company, Advanced Infantry Training Battalion, School of Infantry - West, rappel down a rope during helicopter rope suspension techniques training at the 13 Area rappel tower on Marine Corps Base Camp Pendleton, California, Jan. 22, 2020. HRST training includes classes and practical application of fast-roping, rappelling, belaying and special patrol insertion/extraction rigging from various aircraft. (U.S. Marine Corps photo by Lance Cpl. Alison Dostie)