Employees of United Parcel Service (UPS) wait for the arrival of U.S. Secretary of Transportation Pete Buttigieg at a UPS facility that is delivering vaccines to Washington, DC, and Maryland areas March 15, 2021 in Landover, Maryland. U.S. Secretary of Transportation Pete Buttigieg met with UPS employees for a tour and heard about how UPS is transporting vaccines and how the supply chain works. (Photo by Alex Wong/Getty Images)
