Philadelphia Medical Reserve Corps volunteer Emma Ewing, left, a sophomore at Temple University, directs cars at the city’s coronavirus testing site next to Citizens Bank Park in South Philadelphia on Friday, March 20, 2020. The site, which opened Friday afternoon, is the first city-run drive-through location where people can be swabbed to determine if they have the coronavirus. At the time of opening, it was only for people with symptoms who are over 50 and healthcare workers with symptoms. (Tim Tai/The Philadelphia Inquirer via AP)