CSX 4568, the 50th Anniversary OLS unit, trails 3 of 4 on E783 as it flies west through Shenandoah Junction and ducks under NS 289 on the overpass just out of view to the left of the photo. I know the lighting isnt great, but this was one of the worst railfanning days for lighting that I could remember. That being said, it was still a beautiful unit and my first time seeing it.