BNSF 6574 is pulling a short train of stacks and containers, the majority of which is United Parcel Service (UPS) traffic, and is about to cross over in front of the other stacker (which is stopped), with clearance into Argentine Yard's intermodal facility. This is an almost daily occurrence, the one train overtaking and passing the other - in this case right at the east end of Argentine Yard. The 6574's traffic is the hottest of the hot, to be delayed by no other if it can be helped. Dispatchers make an extra effort at keeping it moving on schedule.