AdvertisementOperation Warp Speed's Logistics Chief Weighs In On Vaccine Progress07:46Download AudioResumeNovember 09, 2020Pien HuangfacebookEmailGen. Gustave Perna tells NPR that if a safe and effective COVID-19 vaccine is approved by the Food and Drug Administration in December, "10 to 30 million doses of vaccine will be available that we can start distributing" in the United States. (AP)