With an SD70ACe leading, no less! Must just be a memorable number, 'cause I've seen 4848 about a dozen times since it's been on the road.
I spotted 4848 several times when it was brand new, shoving loaded coal trains from the rear on the Cowen Sub before it went off to WATCO (Cowen sub, not 4848)
I think this is only the second SD70ACe I have caught.... I wonder if CSX is going to add any more?? Harold