Transportation is often done by contractors. If it WAS done by the US Marshalls, they probably are doing it in much the same was as a contractor would ... like a bus. They do pick-ups and drop-offs at a number of different places along a circuitous route. They may stop a couple times a day at different facilities while on their way out here.

Arranging interstate inmate transfers is a little like routing a train schedule ... timing is everything.

- Carl