Don,
I don't know if there are any YouTube film clips, but the BNSF piggyback/container yard in Hodgkins, Illinois is a busy place. Co-located with a rather large UPS facility. The containers are off loaded onto chassis and the trailers are off loaded to the ground. A yard hostler puts them in rows designated by the last number of the unit, whether container or trailer. Two mile long trains arrive from California in what must be close to the old Super Chief schedule, less thatn forty-eight hours.
John