The Food and Drug Administration said it is working "rapidly" to give emergency-use authorization to Pfizer and BioNTech's coronavirus vaccine. Hospitals and pharmacies across the country are urgently preparing for the arrival of the first COVID-19 vaccine in the U.S. "CBS This Morning" lead national correspondent David Begnaud reports on the latest developments on the vaccine, and Dr. Anthony Harris, medical director and chief innovation officer for WorkCare, joined CBSN's Tanya Rivero to discuss.