UPS, Louisville International Airport
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Video of the deadly crash showed flames on one of the plane's wings, and a huge fireball erupting as the aircraft hit the ground.
As the sun set and businesses started to close in Louisville, Kentucky, on Tuesday, the evening calm was suddenly shattered by a giant explosion near the city’s airport.
UPS calls the giant center Worldport. The facility at Muhammad Ali International Airport employs some 20,000 people, making UPS the largest employer in the Louisville area, the company said on its website.