The 8, 600-employee sorting center in Louisville, UPS' largest for air freight, processes 304, 000 packages an hour but could be modified to handle 500, 000 if UPS could get the planes in and out faster.
During one 20-minute stretch alone, three semi trucks from FedEx Freight and a smaller truck from Advanced Logistics trundled around to the back of a distribution center owned by Quanta.