DARWIN, Australia (March 22, 2021) Australian Army Warrant Officer Class 2 Lee Pendlebury, left, an operations warrant officer with Marine Rotational Force – Darwin, prepares to assist U.S. Marines with MRF-D, at Royal Australian Air Force Base, Darwin, NT, Australia, March 22, 2021. Marines and Sailors with MRF-D are required to conduct strict COVID-19 mitigation procedures prior to arrival in Darwin, in compliance with Northern Territory Health Authorities. All service members must provide three documented negative COVID-19 swab tests throughout their travel and prior to being released from a 14-day quarantine period. (U.S. Marine Corps photo by Sgt. Micha Pierce)