US Marine Corps UH-1Y Venom helicopter crew chiefs with Marine Light Attack Helicopter Squadron (HMLA) 469 prepare to take off during a Helicopter Rope Suspension Techniques (HRST) Master Course at Landing Zone Sterling, Okinawa, Japan, Sept. 14, 2022. Fast rope and helicopter rope suspension training teach Marines proper knots, and rappelling techniques and build confidence for maneuvering from air to ground.