LOUISVILLE, Ky. —

A UPS cargo plane crashed Tuesday at an airport in Louisville, Kentucky, 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 sprawls across an area the size of 90 football fields.

It processes 2 million packages per day, but has the ability to handle even more. It has the capacity to process 416,000 packages and documents per hour if needed.

The Louisville airport ranks third among U.S. airports for cargo as measured by weight, after Memphis, Tennessee, and Anchorage, Alaska, according to Airports Council International World.

A UPS town

Some 20,000 people work at the center, making UPS

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