[TexasGunLover]

Just an interesting fact, FedEx flies almost all priority mail for the USPS during the daytime. At night, FedEx planes fly FedEx Express packages. This allows FedEx to keep most aircraft fully utilized.

[Vigilanteman]

This is true. FedEx doesn't like under utilized cargo space. Only rarely will the USPS book their priority mail on a commercial flight anymore.

The postal service have no planes of their own and commercial flights used to be commonly utilized. I am not sure what commerical airlines are doing with all that cargo space now that people have stopped checking bags and try to carry everything on. Does anyone know?