A worker picks up one of the dozens of pallets of more than one million pieces of PPE to help Phoenix schools reopen for the 2020-2021 school year fill a Phoenix Convention Center hall as the City of Phoenix begins to ship the pallets out to schools Tuesday, Sept. 8, 2020, in Phoenix. (AP Photo/Ross D. Franklin)

Phoenix Mayor Kate Gallego, left, Phoenix Vice Mayor Betty Guardado, middle, and Dr. Lily DeBlieux, right, Superintendent of the Pendergast Elementary School District, stands near pallets totaling more than one million pieces of PPE to help Phoenix schools reopen for the 2020-2021 school year in a Phoenix Convention Center hall as the City of Phoenix begins to ship the supplies out to schools Tuesday, Sept. 8, 2020, in Phoenix. (AP Photo/Ross D. Franklin)

Workers push one of dozens of pallets with more than one million pieces of PPE to help Phoenix schools reopen for the 2020-2021 school year onto a delivery truck as the City of Phoenix begins to ship the pallets out to schools Tuesday, Sept. 8, 2020, in Phoenix. (AP Photo/Ross D. Franklin)

A worker helps prep one of dozens of pallets with over one million pieces of PPE to help Phoenix schools reopen for the 2020-2021 school year fill a Phoenix Convention Center hall as the City of Phoenix begins to ship the pallets out to schools Tuesday, Sept. 8, 2020, in Phoenix. (AP Photo/Ross D. Franklin)

Phoenix Mayor Kate Gallego announces the arrival of more than one million pieces of PPE to help Phoenix schools reopen for the 2020-2021 school year as pallets fill a Phoenix Convention Center hall, Tuesday, Sept. 8, 2020, in Phoenix, as the city begins to ship the pallets out to schools. (AP Photo/Ross D. Franklin)

A worker picks up one of the dozens of pallets of more with one million pieces of PPE to help Phoenix schools reopen for the 2020-2021 school year fill a Phoenix Convention Center hall as the City of Phoenix begins to ship the pallets out to schools Tuesday, Sept. 8, 2020, in Phoenix. (AP Photo/Ross D. Franklin)