learn more at factsonhand.com today. stories as we come on the air. tonight, several developing stories as we come on the air. just a short time ago, a second vaccine clearing a major hurdle. late today, an fda panel recommending emergency use authorization for a second vaccine here in the u.s. recommending emergency approval of the moderna vaccine. the fda s final decision expected within hours. tonight, what the data reveals on the moderna vaccine, preventing severe cases of coronavirus and can it stop the spread of the virus? what we ve learned. could there now be two vaccines up and running before christmas? while across the country tonight, vaccinations under way. drive-through sites for health care workers and new questions after a second health care worker suffers an allergic reaction. and news that there could be extra doses in some vials of the pfizer vaccine. all of this comes following the deadliest day of the pandemic here in the u.s. more than 3,600 deaths in just