Tweedledee and Tweedledum

Take your pick on who is what (I think CSX fits the latter).

Here, the dispatcher has put this eastbound empty autoracks train in the hole at the Hays siding, led by Union Pacific SD70M #5217and CSX B40-8 #5953. The crew took an opportunity to walk around and stretch (read: smoke break) while waiting for a clear signal at CP K290.4

Edit: Re-tweaked and resized & watermark added in Photoshop CS3.