UPS workers unload shipments of the Moderna vaccine for COVID-19 (12-20-20)
Shipments of Moderna's vaccine for COVID-19 arrive at UPS Worldport in Louisville, Ky., on Sunday, Dec. 20, 2020.
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A semitruck arrived carrying the Moderna vaccine at UPS WorldPort around 9:50 a.m. Sunday.
Louisville's airport made a $2.5 million investment this year to help prevent any weather delays.
UPS is suspending at operations Monday night at its global air hub in Louisville for inclement weather, a first since the hub was established around 2000.
