Shown is the antechamber and patient area of a Negatively Pressurized Conex, or NPC. The NPC is divided into two sections. The patient compartment is for the COVID-19 patients, both ambulatory, seated, and those on litters, including patients requiring ventilators and the aeromedical personnel. The anteroom separates the cargo area of the aircraft from the area containing the infected patients. Control boxes with signal lights in both compartments allow for communication between care personnel and multiple windows enable coordination of care. (U.S. Air Force graphic by Travis Burcham)