Boeing 747-400 (N473MC)

FedEx? Are you sure since it says Atlas Air on the fuselage?

Very sure :) Looking at any recent flight on the activity log below confirms, as well.

The aircraft is operated by Atlas Air, under contract to FedEx (though the contract ends this week). By the agreement, the flight uses a FedEx callsign. Atlas has a few other similar agreements (e.g. Qantas Freight), though most of their flights use the Giant callsign.

I see Atlas 747’s running FedEx missions into Memphis & a few other places during the Christmas rush, so this is nothing unusual. That time of year, it’s all hands on deck to get the job done.