LOUISVILLE, Ky. (AP) — A UPS cargo plane crashed Tuesday at a Louisville, Kentucky airport where the company operates its largest package delivery hub.

UPS calls the giant center Worldport.

Here’s what to know about its enormous scale:

Processes 2 million packages per day

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.

It processes 2 million packages per day in a facility the size of 10 football fields. It has the ability to handle even more: It has the capacity for 416,000 packages and documents per hour.

Louisville’s location in Kentucky puts it within four hours of flight time to 95% of the U.S. population. It serves 200 countries around the world.

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