FILE - In this March 5, 2021, file photo a sign outside a pharmacy in Steelton, Pa., announces a drive-thru administering COVID-19 vaccinations. Acting Health Secretary Alison Beam said Wednesday, March, 31, starting Wednesday, vaccine appointments are being expanded to include police, corrections officers and other law enforcement; volunteer and professional firefighters; grocery employees; and food and farm workers. (AP Photo/Matt Rourke, File)

FILE - In this March 26, 2021, file photo a member of the Philadelphia Fire Department prepares a dose of the Johnson & Johnson COVID-19 vaccine at a vaccination site setup in Philadelphia. Acting Health Secretary Alison Beam said Wednesday, March, 31, that starting Wednesday, vaccine appointments are being expanded to include police, corrections officers and other law enforcement, volunteer and professional firefighters, grocery employees and food and farm workers. (AP Photo/Matt Rourke, File)