Air Force Chief of Staff Gen. David L. Goldfein listens to a brief by Lt. Col. Paul Hendrickson, Agile Combat Support Directorate's Air Force Chemical, Biological, Radiological and Nuclear Defense Systems Branch materiel leader, on the rapid acquisition process and functional capabilities of a negatively-pressurized conex prototype at Joint Base Charleston, S.C., April 30, 2020. The NPC was developed and designed to fit inside both C-5 Galaxy and C-17 Globemaster III aircraft to enable safe transport of up to 28 passengers, as well as teams of medical professionals to medical facilities around the globe. (U.S. Air Force photo by Staff Sgt. Chris Drzazgowski)