A 721st Aircraft Maintenance Squadron Airman marshalls a C-17 Globemaster III aircraft following the first-ever operational use of the Negatively Pressurized Conex to transport 12 COVID-19 patients to Ramstein Air Base, Germany, July 1, 2020. The NPC is the latest isolated containment chamber developed to transport up to 28 individuals with infectious diseases. (U.S. Air Force photo by Airman 1st Class John R. Wright)