When a vaccine for the coronavirus is ready, UPS Inc. says it will be ready to store and ship it. UPS is building two giant freezer farms capable of super-cooling millions of vials of a COVID-19 vaccine, preparing for the day when it will need to deliver the medicine at high speed across the globe. The facilities are under construction near UPS air hubs in Louisville, Ky., and the Netherlands. They will house a total of 600 deep-freezers that each can hold 48,000 vials of vaccine at temperatures as low as minus 112 Fahrenheit. Researchers are working feverishly to create effective vaccines and treatments. When they’re successful, the next challenge would be for the world’s transportation network to get the medicine into the hands of doctors and patients on a global scale.