Verified answer

Cab.

Edit: That's what the Wikipedia article says.

while a bunch railroad, inclusive of BNSF or UP sends a rescue engine, that railroad will in all risk function their engine. The Amtrak group will in all risk proceed to be of their engine, holding a watch at something of the prepare. If their engine continues to be cranking out head-end capacity for the passenger vehicles, they are going to shop that going, even because of the fact the prepare is towed by yet another engine. they could nonetheless be in fee of the prepare, even nevertheless yet another group could be working the lead engine. think of of it this type: Amtrak crews are many times in simple terms qualified to function the particularly small form of engine varieties operated by Amtrak. they at the instant are not likely to be qualified to function the freight engines operated by BNSF and UP. Sorry yet i don't comprehend which day is best suited for the supervisor. often for Amtrak, it extremely is sturdy to holiday on Sundays while there is way less freight site visitors, yet i don't comprehend if that applies to the path operated by the Southwest chief.

These of a design that defies placement in one group or the other. It is a unique design and construction.