(I recieved the following train information via email.) The trains involved were Q441-28, with SD40-2 8101, and K916-28 with SD70M 4695 and SD70AC 4810.
We had one up here on BNSF over the weekend. That was apparently caused by a dispatching error. It will be interesting to see what comes from the CSX investigation of this sad incident. Boxcab E50