The report just came out. I can't quote it verbatim. It was human error. I understand that fatigue may have been a factor, a piece of equipment.... There are a lot of other factors going on too. A light engine, which is a three-locomotive consist, crossed over into a freight train, as I recall.
What a lot of people didn't hear about, what didn't make the headlines, was that the crew was called immediately before and told to be on the lookout because there were trespassers in the yard. So they were watching for people running around and paying attention to a whole bunch of things. They hit a crossover, which is a very short piece of track that crosses them from one track into another, and they struck another movement.