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Cargo workers demonstrate the cold chain handling of medicines and vaccines in a temperature controlled warehouse at Swissport Pharma Center in Machelen, Belgium, Wednesday, Nov. 25, 2020. Safely delivering COVID-19 vaccines, one approval has been made, will be the mission of the century for the global air cargo industry. The Swissport Pharma Center, which opened in Oct. 2019, has a state of the art temperature controlled warehouse space dedicated specifically to pharmaceutical shipments going out of Brussels airport. (AP Photo/Virginia Mayo)