Pfizer's COVID-19 vaccine is expected to begin rolling out across hundreds of sites in the country on Sunday (Dec. 13), Army Gen. Gus Perna announced on Saturday.

HuffPost is reporting that Army Ge. Gus Perna announced on Saturday that Pfizer's COVID-19 vaccine is set to begin rolling out tomorrow (Dec. 13). Doses are currently being packaged at Pfizer's Michigan office. These vaccines will be delivered to 145 predesignated areas across the nation by Monday. Then, on Tuesday, more shipments of vaccines will be sent to 425 different areas, then 66 areas on Wednesday. Roughly 2.9 million vaccines will be distributed in total.

"Expect 145 sites across the states to receive the vaccine on Monday, another 425 sites on Tuesday, and the final 66 sites on Wednesday," Perna said in a press conference. Perna sent a huge thanks to "a great collaboration between UPS and FedEx" for helping to distribute the vaccine so quickly. "We want to ensure perfection in the vaccine. We don't want anything going into an arm that would be a problem," he continued.

“At the end of the day, we have an excellent plan that has been well-coordinated, well-synchronized, well-rehearsed, and well-collaborated with everybody from the total government through [the] commercial industry down to the governors and the states. I am very confident in it,” Perna added.