This rush is a little easier than the inbound because of how the aircraft spread out and the distance between them increases rather than decreases to minimums on the inbound rush. This whole scenario is played every night with the exception of weekends and has one very important player. This important player in the cargo night hauler industry is the air traffic controller. This operations director has to manage huge amounts of inbound and outbound traffic to the cargo company's hub facilities. Without the controllers safely and expeditiously lining up the aircraft and getting them down to the runway in an orderly fashion, these large companies would have a hard time making ends meet.
Most folks think air traffic control is mainly at the airport.
That is understandable because the most visible part of aviation is at the airport. The lining up of the aircraft inbound to the airport begins hundreds of miles out. After the aircraft are lined up they are descended down and spaced by more controllers and then they enter Memphis Approach's airspace. These approach controllers line them up for the runways in order for them to land. It's not just in the air that the problem arises.