"Busiest day" in FedEx history

FedEx employees, Victor Alvarez, left, and Ricardo Bruno, sort through items being shipped through the Fedex World Service Center on Dec. 10, 2012, in Doral, Fla. FedEx Corp. expects Dec. 10, to be the busiest shipping day in the company's history when 19 million packages are expected to move through their system.

FedEx employee, James Johnson, sorts through items being shipped through the Fedex World Service Center on Dec. 10, 2012, in Doral, Fla.

FedEx employees sort through items being shipped through the Fedex World Service Center on Dec. 10, 2012, in Doral, Fla.

FedEx employees, Robin Abner, left, and Ron Shaheen, sort through items being shipped through the Fedex World Service Center on Dec. 10, 2012, in Doral, Fla.

FedEx employees, Rene Carballo, left, and Alexis Barzags, sort through items being shipped through the Fedex World Service Center on Dec. 10, 2012, in Doral, Fla.

FedEx employee, Javier Belisario, sorts through items being shipped through the Fedex World Service Center on Dec. 10, 2012, in Doral, Fla.

FedEx employees, Rene Carballo, left, and Alexis Barzags, sort through items being shipped through the Fedex World Service Center on Dec. 10, 2012, in Doral, Fla.

FedEx employees sort through items being shipped through the Fedex World Service Center on Dec. 10, 2012, in Doral, Fla.

FedEx employee, Ron Shaheen, loads items being shipped into a truck for delivery at the Fedex World Service Center on Dec. 10, 2012, in Doral, Fla.

FedEx employees, Denis Sanchez, left, and Nate Arroyo sort through items being shipped through the Fedex World Service Center on Dec. 10, 2012, in Doral, Fla.

FedEx employees, James Johnson and others, sort through items being shipped through the Fedex World Service Center on Dec. 10, 2012, in Doral, Fla.

FedEx employee, Victor Alvarez, loads a truck with items for delivery at the Fedex World Service Center on Dec. 10, 2012, in Doral, Fla.

FedEx employees, Jorge Chey, left, and Bill Falbo, sort through items being shipped through the Fedex World Service Center on Dec. 10, 2012, in Doral, Fla.