DARWIN, Australia (March 22, 2021) Hospital Corpsman 2nd Class Julian Gordon, left, a preventative medicine technician with Marine Rotational Force-Darwin (MRF-D), administers a COVID-19 test to a U.S. Marine with MRF-D at Royal Australian Air Force Base, Darwin, 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)